Ok let me start off by saying this. I'm 17 going through high school. I've been dating the same girl for the past year, and ive known her for about a year longer than that. I don't have BPD, and I'm fairly convinced maybe she doesn't either. Back 1 year before she started middle school her parents divorced, and it was hard on her. She felt isolated because her parents werent together and she had trouble adjusting to the school where her mom lived because she had zero friends since she moved. Naturally, like any kid in the 21st century she made internet friends, and she wound up talking with a girl in ohio who ive met and she's a pretty nice person aside from her schizophrenia (ask me about that, I've got stories). Anyways a shy girl just staring middle school who only has friends made online. Eventually she makes more friends, and goes through middle school as a normal girl, very happy go lucky and free until 8th grade. She finds out shes going to have to leave her friends up north and move down south and start again in high school with nobody she knows. This is where the suicide attempt happens. The emotional teenager got in trouble for something petty, and her father cuts off her internet access for a week. Shes moved into a new high school, lonely, only friends on the internet and now she can't talk to them? Internet drama happens and right in the middle of it she gets in trouble and now cant talk to them. Well depression and isolation kick in for her and she attempts suicide because of all the self doubt and hate she has for herself. Her dad catches her in the act and she gets shipped off to a mental institution, there shes diagnosed with BPD. Now heres where it gets a little confusing. She takes these drugs they give her, and her symptoms get worse and worse, her insomnia spikes and now she goes days without sleep living life in her freshman year. Oh and she's transgender now. Her depression and sleep get worse and worse, her mixed emotions intensify, her feeling of self worth is at an all time low. Then she stops taking her medication behind her parents backs and picks up the alcohol they store. Her sleep issues stay, but hey  her mood is getting better. A few months later, shes not trans anymore, back to female, she meets me, she puts down the bottle. One year later, shes free of depression, sleeping issues, and she now has a 3.8 GPA, and she omits virtually no signs of manic depression. Recently we were going through her room and I was helping her clean. I found her stash of old pill bottles from medication she used to take. I looked up the side effects for all these medications, all of them. Literally all of them have depression and insomnia as a side effect. I'm inclined to believe she was falsly diagnosed, and the medication gave her symptoms which made her seem exactly like she had BPD. What do you guys think?

tl;dr: Girlfriend was normal until parents divorce, then switching houses made her feel isolated and she got sent to an institution where she was falsly diagnosed with BPD. 2 years off her meds entirely and exibiting no symptoms, and has a 3.8 GPA and lives a completely regular life.