Best of luck to you with the presentation! I know I am terrified of those as well everytime I get one.
If it wasn't for her. I hate that I don't know what to do.
Sounds tough Savanna. Can you let her know you are there for her? Can you signpost her towards professional help?
Sounds like you really care about her. Guessing you want to be present, connect, contribute to her well being, nurturing her, supporting her- or so I assume from what youve posted.
I don't know what you're going through, but there are people who do care and would listen