So, uh... first off, please don't take offense to our user name, it literally came about because none of us could agree on a single name until one of us suggested "Unanimous," and it kind of reverberated as suitable and everyone agreed on it (self-referential win, there). Currently, I'm fronting, as I do a majority of the time... I'd say my name, but eh... I would prefer not to. You can all call me Liverbones, though.

In any case, I'm part of a system that currently has twelve other members: Rachel, Jake, Marcus (who also goes by Marc or Aaqil), Matty (or Matthew), Heather, Eli, Blair, Ben, Bat, two self-proclaimed "angels" (who shall remain nameless to avoid any triggers for anyone else), and one other that has remained rather... fuzzy, but certainly distinct, and definitely there.
By the way, apologies in advance for the TL;DR post. Sorry!

The problem is... kinda multi-faceted, but revolves around one of us: Rachel. She's the oldest of the others in the system -- she's been around for about thirteen years -- and she's a pretty constant cause of... I don't know, chaos, I guess. That's not what she means to be (I think), but it's what she is. Some time ago now (in 2009, I think?) she had an existential crisis which actually led to our diagnosis. She conspired with someone else (who's now a friend of the whole system) to get away from my family (including, at the time, my wife and daughter) in order to become female. When she was recovered from Pittsburgh (we live in North Carolina, by the way), everyone was just... shell-shocked by how different I appeared to be. We all found out soon afterwards that we were dissociative, entered therapy, and were officially diagnosed.
Since that time, though, Rachel continues to try to show that she is not me and that she wants to be her own person. I don't have a problem with that -- none of us have a problem with any of the others wanting to express themselves -- the problem is how she does it.
In short, she... fell in love with someone (who shall remain nameless). She was in a long-distance relationship with them for... a long time, I'm not even sure exactly how long. He was aware of the DID diagnosis, knew she wasn't technically (in the biological sense of the word) female, and knew that her body was married to someone else. All of that makes it kind of... appalling that he decided to proceed with the relationship anyway, but eh... it's not really my place to judge him, even if I want to at times.
So anyway, my wife discovered the relationship that Rachel was having and brought it to my attention, and to the attention of everyone else in the system. Honestly, we all knew that she was talking to this person, and that he made her happy, but I don't think any of us knew the full extent of it. When we found out that she had been essentially hiding this relationship from everyone, we didn't have much of a choice but to... end it. It really seemed like a serious threat, especially considering that Rachel had previously tried to cut all ties with the rest of us in the system and go her own way in Pittsburgh -- and I think we were all scared that she might try to do it again.
So yeah, we cut everything off and they said their good-byes. Apparently, Rachel and this guy saw each other as "soul mates," and it was... very painful for us to have to end things like that. Later, we found out that she had once again gone behind our backs and actually got back in touch with him and kept talking to him. Once the rest of us found out about that, we went on high-alert and immediately shot down everything. After that, Rachel more or less disappeared for months.
But now, months after we had to end everything between them, Rachel attempted to contact him yet again, but this time he told her that he could not talk to her anymore... that it was just too painful for him to lose her, then have her, then lose her again. I don't blame him. That would be absolutely torturous, going through a relationship with someone only to realize that it's entirely impossible for them to actually be together.
Since he said that he can no longer talk to her, though, Rachel has been... extremely sad. I mean, she's always been sad, but this is just... wow. She's been catatonic, she's been thinking of hurting herself (and she really would have if we didn't keep stopping her), she's even thought about removing herself from the system entirely, and this is just... way too much.
We just don't need this kind of drama. I'm happily married, Marcus is happily married, Jake is in a committed relationship with our wife, we have two children, I mean... I feel for Rachel, I really do, but... God, enough is enough. We have enough anarchy running around us without this. And I know that she's watching me type all of this, and that's really just... hurting me.
I don't want to bad-mouth her. I love her, she's like a sister to me, she's always been there when I needed someone, but she's just... she's betrayed everyone to such an extent that it's getting harder and harder to know what to do about her. And I guess that we could all really use some help and advice here, if anyone here has experienced something like this.
And seriously, I apologize for the huge post, but if you read this whole thing, thank you. We're in your debt if you have any kind of advice.