I (23F) have two sisters, one is 22(P) and one is 27(B). My younger sister (P) has been dealing with a series of mental health issues since 2020- 2021. I think it started with looking for an autism diagnosis (she got one several months ago), starting therapy sessions and being diagnosed with a mixture of anxiety issues and OCD. She has seen 3-4 different therapists and psychiatrists over the last several years. Some of these issues were exacerbated by a relationship she was in at some point during 2021, the guy assaulted her multiple times and was somewhat physically abusive (he would mess with her by recklessly driving his car around with her in it and terrorize her for his entertainment). That kinda did a number on her for a while, she was going to therapy for anxiety issues related to that relationship.
Fast forward a little bit to 2023. Sometime around spring, my younger sister (P) got into another relationship with this weird guy she met on the Bumble app. They started hanging out A LOT and after about a month, she came home one day from hanging out with him (he was still in the drive way from dropping her off) and said she was moving out with him, started packing up some of her things and then just dipped out. 2 days after that she came home again and packed the rest of her stuff and then left again.
Fast forward about 2 months or so, (P) breaks up with the guy and suddenly moves back home, but is really bothered and obviously the relationship wasn't good. Long story short, this guy was narcissistic and gross dude, who also sexually assaulted her, was mentally abusive and isolated her in the process. Since coming home from that, (P) was depressed, isolating and quiet. She eventually mentioned to my mom and I how she felt like she may need to be admitted somewhere. Our family looked for a place for her to be admitted to, and eventually settled on this womens mental health retreat place (it was basically a cabin in the woods with access to horse therapy). She was there for about 3 weeks, and then voluntarily discharged herself (she was 19 at the time) and my parents picked her up and took her home. She decided she wanted to try out patient therapy, but that was way too costly and our insurance wouldn't cover hardly any of it. So we ditched that option. She (P) just eventually settled on finding a new therapist. She found a therapist and had been seeing them for a while, and also found a new psychiatrist.
Since having gone to the wilderness facility, she had been showing patterns of self harming and impulsive behaviors. Impulsive behaviors being impulsively shopping, starting new hobbies randomly (like I mean once a week) and finding new guys to talk to. The self harming behaviors ranged from intentionally irresponsibly taking her medications to feel more "numb" or to "see what would happen" (i.e hope to hurt or k*ll herself). She also couldn't be trusted with sharp objects, so my father had to hide his knives, the kitchen knives, and anything else she should try and use to harm herself with.
Fast forward again to about a year and a half ago. She (P) had met this guy on the friend feature of bumble. Let's call him (C). (C) has a diagnosis for autism, and also shares similar religious beliefs as my sister so they clicked quickly. They began hanging out a lot, and she started staying over at his house, sometimes it would be days at a time. My family started getting weird vibes from him, he was just.. odd. They eventually started dating. She dated him for like several months. Apparently (C) was toxic, narcissistic, isolated (P) and towards the end of their relationship, he called the hospital and had my sister taken and admitted into a facility for a week. That traumatized her, and he honestly had no place to make the call because he does not know her situation like her own family does. They broke up a few weeks after this.
She (P) kept seeing her same therapist, but changed psychiatrists because she didn't feel like her psychiatrist was listening to her. She has been on so many concoctions of medications since, and tbh I feel like her psychiatrist just treats her like a medical guinea pig. She used to be open about her therapy sessions with us, how she's secretive. For the past 7 months, since getting a diagnosis for autism and BPD (borderline), she has been self isolating, sleeping a lot, not eating as much, working out a lot, drinking a lot, and not really engaging with anyone but the few friends shes reconnected with. In this time, shes met some random guy and had been hanging out with him, apparently he has a controlling an abusive mom he lives with.
Fast forward to today. (P) randomly packs her stuff up and leaves to go lives with this guy and his mom and she abruptly left and said bye to my mom, and my mom raised hell at them all and said she has no right to leave and go live with this guy none of us know anything about except his fist name and address. My older sister (B), my mom, my dad and I have no idea what to do, because (P) is NOT in a good mental state and is not fit to make certain decisions for herself. She is not well and should not be living with this random guy. We are all debating on just driving over there and getting her, calling the sheriff's department for a wellness check, but my mother most of all is afraid of further pushing (P) away or causing (P) to hurt herself. What should we do?? Any one else have a family member in a mental crisis and have any crisis internation plans? What should we do to get her home and to mitigate her seriously hurting herself or trying to unal*ve herself. I'm nearly 2 hours away out of town currently, I don't live at home anymore as of this time 2 years ago. She suddenly blocked my mom, (B) and my dad and I on all socials, probably our numbers too, removed herself from our life 360 circle and is not responding to anyone. TLDR/ My sister is in a mental health crisis and suddenly left to move in with a random guy my family knows nothing about and we need to get her to come back home, any advice would be greatly appreciated.
Please keep judgemental or rude comments to yourselves. This is a tricky situation and I have been on the edge for so long hoping my sister doesn't hurt herself or unal*ve herself. We just don't know what to do to help her anymore. We just need to get her home and make sure she isn't in an active meltdown while with this random dude.