I'm sorry you are going through this and I am sending you comfort. I know this is hard.
I can also relate. Having cPTSD and all the associated stuff that comes along with it is hard enough for us to understand ourselves, let alone try to defend ourselves for how we feel to others - especially with anyone we have chosen to share and trust with. It's a completely overwhelming feeling having to navigate and negotiate each and every emotion, and try to get through each moment safely, without judgement. You are so right - therapy, work and just looking after the bare minimum is hard, having to care for others on top of it all is all the more difficult. Having to justify ourselves makes the healing process so much harder, and makes each day a struggle.
I am primary caregiver to an elderly mother (who is also a big source of my traumas from childhood) and I encounter this kind of comparison all the time (i.e. you must be dong well - you are able to look after your mother AND somehow make yourself look presentable every day...can't be "that" bad if you are managing every day...at least you aren't in hospital). Yet, I've had to quit my job, isolate myself from most of my circle of friends, family and disconnect from those closest to me. Days go by and I don't even know how I make it through...but I do. We do.
The scope of what we deal with emotionally and often, physically on the inside rarely gets any airtime and so people often misread our ability to be high functioning as somehow "better off" or our situation "less serious" than others. I've also had the cancer comparison thrown at me. I believe it comes from a place of misunderstanding. At the end of the day, trauma is a messy, messy thing to live with. It's rare to find someone who wants to dig deep with us, feel what we feel on a daily basis and walk beside us when we are in pain...after all, let's be real...people want a quick fix that's painless, clean and fast. Healing doesn't work that way.
You are doing the best that you can. Remember that. I find that people (mostly family and friends) have very different expectations of us and what it means to heal and what constitutes recovery. I think a lot of that comes from them genuinely wanting us to get better, but without the discomfort, pain and grieving that comes along with healing. That's sometimes forgotten when people like to compare physical vs. mental illnesses. When I become angry at others for their lack of compassion, or devaluation of what I'm going through, I take a big breath, step away and say nothing until I can get someplace safe on my own to reflect on why it bothers me so much. It may not be the best approach, but it's how I cope at the moment.
If it's possible and you can manage it, even 5 mins away on your own (in a safe place) can be helpful to step away, close your eyes and remember that you are trying your best and that in this moment, you are making it through.
I'm here if you want to chat more...sending you light.