You can be there for her without being the person she wishes you were. Be her friend. Do what a friend would, and she will heal and you won't have this on your mind.
Off My Chest
RULES:
I am looking for mods!
1. The "good" part of our community means we are pro-empathy and anti-harassment. However, we don't intend to make this a "safe space" where everyone has to be a saint. Sh*t happens, and life is messy. That's why we get things off our chests.
2. Bigotry is not allowed. That includes racism, sexism, ableism, homophobia, transphobia, xenophobia, and religiophobia. (If you want to vent about religion, that's fine; but religion is not inherently evil.)
3. Frustrated, venting, or angry posts are still welcome.
4. Posts and comments that bait, threaten, or incite harassment are not allowed.
5. If anyone offers mental, medical, or professional advice here, please remember to take it with a grain of salt. Seek out real professionals if needed.
6. Please put NSFW behind NSFW tags.
If your friend's explanation is that she had a lot going on, it's probably her overall mental health that's the issue.
Being rejected romantically is sad, but a normal part of everyday life, and not enough to make an otherwise healthy person react in this way.
You are fully allowed to reject anyone's advances. It's your responsibility to yourself to make decisions you feel are right.
It's very important you understand that her actions were not a result of you not wanting to go out with her, and they're not even a result of her having "a lot going on." Her suicide attempt was a symptom of a drastic mental health crisis for which she needs immediate professional help, and that is something far beyond what you're responsible for or equipped to do. It is also not something that would have been fixed or helped in any way had you even decided differently and gone out with her.
The best you can do is hope she gets the help she needs. Consider contacting local suicide-prevention organizations for further advice if you want.
You are not responsible for the actions of others.
Did the rejection negatively affect her mental state, which in turn pushed her towards acting on dark thoughts? Probably.
Did you cause her hanging attempt? No, the hanging attempt was caused by her tying a belt around her neck and attempting to hang herself.
You are not responsible for the actions of others (in most cases).

Are y'all from the same couple-pair? lmao
I did wonder if this was someone shitposting.
Nah, probably not but that’s a funny asf coincidence 😂
I’m not that depressed about it fortunately
Did you forget to switch accounts, Klarinette245? Josephine? Whoever the bleep you are?
Your drama has been popping up on my feed constantly. You use the same "woe is me" approach in narrating all these weird situations, however based in reality they are.
You've claimed to be every gender and orientation across a multitude of posts. It's getting old.
You're hoovering up advice and seeking validation from commenters who believe you're being sincere, but I doubt it. You're probably shitposting. But either way, you're wasting everyone's time.
Find a therapist, get real help.
*Edit to add: I don't know how much empathy I dare let you steal from me in adding that I am looking for a positive outcome here, all around. Even shitposters do be havin problems. 🤷♀️
What?
It's not your fault you're straight, you don't get to choose what you're attracted to.