so, here's the situation:
My sister (i'll call her sue) and her boyfriend (i'll call him jim) are in a kind of war with my parents. I'm trying to mediate a little bit, but to know the battleground, I need to know what both parties are legally capable of doing.
- jim is 22 and on some kind of disability (i think it's called ssi). as a person with a severe mental handicap (schizophrenia and some assorted smaller syndromes), he gets money from the state every month. his mother is his legal guardian. he lives in his own apartment.
- sue has just turned 18 and also has a mental disorder that leaves her unable to work at the moment. it's possible that with treatment and improvement, she'll be able to get a job at some point, but this likely won't be for a long time. she takes a couple different medications daily. she lives with our mother in another state, about three hundred miles away.
a couple months ago, jim issued an ultimatum: either you (sue) move here, or it's over between us. during this discourse, he threatened my mother several times; all three of them bickered and fought; etc. it was nasty. a week or so later, jim and sue got back together and all was well for the time being.
now, jim is coming to take her. he has bought a bus ticket for early march and is coming with a couple of his friends to take her to his place so that they can live together. she is consenting, and since she's over 18, my parents feel like they can't do anything to prevent it.
our parents feel that neither of them are even close to ready for both the relationship itself and living together, speaking both emotionally and logistically. so they're up in arms, and in the interest of trying to mediate, i'd like to know what options are available to both parties.
obviously sue is legally allowed to just up and go. are my parents able to take legal action against that, against jim's actions, or anything like that? is it possible that this could turn into a big legal/criminal muckup? they've said that they can charge for his harassment of them (he's been calling/e-mailing/messaging them constantly), but i just don't know enough.
thought i'd put some feelers out. thanks in advance!

