Context: she’s 20 years old, and I’ve known her for 4 years, and she’s been one of my best friends. About 3 months ago we started dating and I really do love her. 
She has been (falsely) diagnosed with bipolar disorder and put on lithium, but recently she stopped seeing that doctor and went to another who diagnosed her with BPD, major depression, and mild autism. She has frequent (multiple daily) anxiety attacks and suffers from disassociation quite often.

She’s been abused by many people in her life, both physically and mentally. Her birth father walked out on her mother before she was born. for her entire life her mother and stepfather have been abusive to both her and her brother(14). It used to be physical and mental, but now it’s mainly just mental. 
They’re both alcoholics who essentially abandon her and her brother every night from after work till 12-3am to go drinking at the American legion or a friends house.

Her parents have stopped assisting her with anything financial since she turned 18,  which means she now has multiple thousands in debt to various medical companies. She works at Dunkin’ Donuts barely making enough money to buy food and daily necessities, which leaves little room for saving or any recreational activities.

She was abused physically by a past boyfriend, and mentally by 2 others. 
Her previous boyfriend of 3 years cheated on her with her best friend and twisted the story so that she lost her entire social circle. She was also sexually assaulted about 3.5 months ago, which has affected her greatly. She no longer has a single person besides me to talk to, and it’s taking a serious toll on her mental health. She has daily episodes anger and of extreme depression to the point of suicidal thinking and intentions

I’ve spent nearly every day over the last few months with her helping her through daily life, and I’ve stopped many suicidal episodes, but I honestly can’t keep this up much longer, I’m very mentally exhausted but I will not stop helping for as long as I physically can. 

None of this is an exaggerated, this is a cry for help. I really need help, I really don’t want to lose her to suicide.