@abalthas, I can imagine that it rips your heart out to see your daughter being mentally paralyzed such that she cannot get to the care that would help her.

Compassion & Choices is a useful website to learn about medical aid in dying. It is not legal in every state and she may not qualify. https://compassionandchoices.org/resource/states-or-territories-where-medical-aid-in-dying-is-authorized
You can also call 1-800-247-7421 to speak with an end-of-life consultant. They may offer some assistance in how to talk with someone like your daughter who may not be ready for end of life but crying out in desperation. There are options. See more info here: https://compassionandchoices.org/contact-a-consultant

The 988 Crisis Line also offers some tips on how to talk with someone who wishes end of life would come sooner https://988lifeline.org/help-someone-else/

My Help Navigator may be able to help you find free or low cost psychiatric care and more, check out this website and search engine called "My Help Navigator". https://myhelpnavigator.auntbertha.com/
All they have to do is enter your zip code to find service in your area.

Using the Navigator, you may also be able to find access to a free social worker in your area who could help navigate the next steps. They may be able to recommend in home care or virtual care that would help your daughter make the first steps towards getting the care she needs.