Hi everyone, thanks so much for the helpful responses. Just wanted to update:
Upon discussing matters with her relative, who works in mental healthcare, she recognized something was seriously wrong and that we needed to have her hospitalized. Her doctors said the same. We got her to fly back into town on other pretenses, and unfortunately had to forcibly commit her.
The doctors at the hospital did diagnose her with acute/severe mania, and bipolar. She's been on medication for 2 weeks and started lithium last week to bring her down to earth.
She claims she's being released today, although I'm not sure whether this is true or not. She says she had a hearing with a judge and the psychiatrist advocated for her release. However it was my understanding they wouldn't have a hearing unless they wanted to keep her longer. Plus nobody has been in contact with any of the family, so this is all coming from her, and she is still having many delusions. I guess I'll find out here shortly.
In regard to her demeanor, there's been some improvement. She recognizes that this has only been going on since October, actually only for as little as a week if she's to be believed (since she says it only started when she took her new job on Oct 31). However she's still distorting a lot of past, and after reading some of the guides here, it seems that may not 100% be a result of the mania--although I do believe that the mania was a huge contributor.
I'm contemplating what to do upon her release. For now I'm leaning toward just doing nothing. She is planning to continue working at her "modeling" agency, and hopefully she'll get the wake up call that she's not making $6k/week like she thinks she is. The only thing I'm stuck on is that I mailed her debit card out to the guy in California so her can return some of her stuff, and I also have her only credit card. So of course she's going to want those things back. I've thought about just not responding to her if she asks for them.
Also was wondering do I pay off her balance with what's left in her bank account, then go dark? I feel like it would expedite her wake up call that she is not in such a great place after all and her finances and job are not what she believes it is--since she'll have to resort to her actual money in the bank (of which there's little left). It would also slow her down from flying back to California and help in recovering from the damage she's already done financially. Of course should could always apply for a new card, so at best it would just slow her down. Maybe I do nothing?
