Hey there : ) I'm Reno.
It sounds like you're in a really tough place-- I'm glad you're actively getting help, but if you've begun feeling unsafe again then it's definitely time to take action.
I'm so sorry you're hurting like this, to the point where you're concerned for your safety. And I know it can become all the more difficult to really address these challenges while they're going on. You may or may not need hospitalization, but if you feel you need to be kept safe then it's best to address all of your concerns with someone who can be involved in that process.
From your post it wasn't clear to me whether or not you felt a need to be hospitalized, but I could tell that you were very concerned about how your treatment might be handled there.
Perhaps a nice compromise could be setting up a game plan with your therapist, it they're willing. That way, if you go into the hospital your therapist can contact your care providers there to set you up with a patient advocate. She can also convey a list of concerns that need to be paid attention to if you're admitted again, such as your ED and perhaps schedule regular check-ins with the advocate.
I know a lot of patients feel neglected in hospital care, and it helps to have an advocate who can insure that your rights are being upheld and that your treatment is being upheld. It also helps to have someone to insure that you have an advocate and that they're following up with you. It's just a suggestion, but if it would make you feel more secure about your treatment or potential treatment then I encourage you to approach your therapist about what she can do.
If you do go with a game-plan, perhaps your therapist can save it for emergency use, and you can revise it as you move through your recovery.
Wishing you well. xx