I preface this by saying I am not judging you. I don’t know what your life is like.
My observations of all your posts are I am not seeing any communication with your friend Or her sister. I do see much about you and your feelings and when it comes to hers I don’t see anything other than her apologies and then assumptions of what she is feeling or thinking. I have been down that road more times than I want to admit to. The amount of times I could have saved myself so much insanity of my own thoughts if I had just gotten outside of my head and communicated… and it embarrasses me to even admit to.
I hear what you’re saying but.... I was not with her 24/7 7 days a week...I would see het Tuesday & wednesday...that's it...I gave plenty space and did not call her when I was away, I let het call me if she wanted to so sucking the life out of her is wrong in my opinion.
My first question is how do you know *
she* has plenty of space or is that your opinion? Did she set up these boundaries for herself or did you set them thinking that’s what she needed? I have done this without thinking about it. “This will be ok with them.”, without actually consulting them about it or making a plan on how to communicate when those boundaries are no longer working for either of us. Then I get offended if they change the boundaries *I* set for them. Another highly humiliating confession for me…. I assumed what was best for them and me without actually including them in that decision or, what is worse, I don’t even tell them! Why? I don’t know but I am most definitely guilty of it.
I'm just feeling down, its like a roller coaster...ill be fine...I'm excellent at hiding my pain, had to for years
Maybe she needs more space or is having issues of her own she is hiding from you. Most people with trauma are exceptionally good at hiding their pain, insecurities , or even their identity. However, in turn trauma survivors are exceptionally blind to people who are close to them and their cues when they might need help, more so if those individuals are hiding it from you for fear of your reaction. At least that has been my personal experience In my own relationships. I am too busy hiding

to notice they are too.
and looks like I can't let my hair down on here either.
I know what it is to feel like/be a prisoner in your home. Not for the same reasons. Almost 7 years ago my health spiraled downward very rapidly. I went from going to the gym twice a day (on the average), working, driving, cooking and baking with abandon, being able to go to the movies, out to dinner, doing my gardening, my woodworking, playing the piano… To basically being bedridden… In the course of a little over a week I lost most all of my independence. Going to my eye doctor here recently was the first time I had been anywhere but my next door neighbor’s house since my last doctor’s appointment in October. I rarely go to my neighbor‘s house - she has her own life and when I do go over there it takes me a couple of days to recover because I overdo it from a health perspective.
I now fight to maintain independence within my home. Example: I can’t do my laundry anymore as the washer and dryer are in the basement. I am only allowed by my doctor to take 2 showers a week. It takes an hour (sometimes longer) for me to brush my hair, teeth and get dressed.
And while, yes, I have a legal husband, we weren’t in the best place before this, we are less than roommates now. There are no arguments as long as I keep my mouth shut and never argue and am always smiling and laughing and happy outwardly. My youngest is 18 so while she lives here, I can’t use her as a support system as being 18 is when she should be spreading her wings and living her own life without having obligations to her mother. Even when they are home (which is not altogether often) they go to their happy places. my daughter to her room (usually for sleeping), my husband to the basement for his gaming and other activities. All my other children live in other states. Depending on their lives I may hear from them about once a month occasionally more. My only other friend, besides my neighbor, of 35 years also lives in another state. Again, has her own life.
Outside of doctor’s appointments? I am home 24/7/365 with a dog I don’t like. I hate my life passionately. When COVID hit I was like and? And rather excited because nobody else could leave either! (Yes, I am evil). I wish things were different more than I admit to people. I have had to find hobbies I can sit or even lay down to do because that is all I am good for, for the time being. All of them take me forever compared to a healthy human. This frustrates me to no end, yet, at the same time… What else have I got to do. I feel my loneliness is palpable to everyone and they just don’t care to acknowledge it. When I asked my husband to at least share his day with me I was told, “I don’t talk about work and you know that. Go find some friends.”. I haven’t asked since and that was more than 5 years ago.
I have tried different sites, reddits, discords to try to stay connected to other humans. I never feel like I belong anywhere, but I never have, healthy or not. I keep trying and often felt like I must be a masochist to do so.
I was diagnosed about a month ago with C-PTSD in my first ever therapy session via my iPad. Was told to read a book that freaked me out, still does. In his book there were several sites recommended for online support groups. I chose this one because I was in a rather frenzied state where I was having trouble focusing and it had the simplest website address to type!

(I barely recall typing my introduction.) I truly believed it probably would be a waste of my time. I figured everyone would tell me to snap out of it and get over myself.
*jaw-drop* They didn’t. Well holy shit… Ok then…
I have read so many diaries. I have seen my own thoughts (no matter how dark) reflected by SO MANY (not gonna lie, still creeps me out). I have learned I am really good at crying for other people. But there is always honesty. Honesty we may or may not want to hear at that moment but it is honest.
You can let your hair down or not. You can let it all down at once or strand by strand. That is all up to you. Your choice. Whatever makes you feel comfortable. There are most definitely people on here who will ‘get it’.
But….There will though be a variety of honest suggestions and observations and perspectives. Some will mesh and resonate with you, some won’t, that’s the great thing about variety. Can you imagine if
all they offered was sushi and you really wanted a burger? And, IMO, being honest and forthright is the only way to truly feeling supported and the only path to healing, because those are the ones caring enough to help pull you out of yourself. (Even if I find myself fighting it on a very regular basis

).
I don’t know if any of that is helpful to you. Just my observations and experience so far at the beginning of my own journey. Take it or leave it. It won’t offend me either way. The choice is yours

and I trust you will do what is best for you.