I think its very good advice to tell you sister in a calm way, that she has caused you immeasurable heartache and damage with her lies. And that you don't want to talk to her anymore. Or throw in, till you get a thorough psychiatric evaluation.
Its true that suicide is preceded by unsuccessful suicide attempts. It may have been a dry run. Does sound lame what happened, but you can't imagine how spooky and scary it is to "get" these ideas, like watching yourself do it, out of body experience. Hard to tell if she realizes she is in danger and needs a safe place to stay, or is playing your mother for a free place to stay. Very depressed people can forget to eat, maintain hygiene, and are wrapped up in their own world. They can't help it. Can however, put on that happy face for a show. Its confusing to those around them. There's 2 issues here, the lying and the depression.
I would not involve myself in it further. Its really bugging you. Hope you can tell her, as stated above, as calmly and firmly as you can. Probably need to explain this to your mom too, because as most moms do, your mom will be giving you an "update" and you don't need to even think about
it at this point. Wouldn't even discuss it among your sisters either. A toxic topic so to speak.
SO glad that you got back together with your sister after 20 years. That wasn't easy, and you are fortunate to be able to have a fresh start. I always tell my kids, when someone says that I said, or someone said, xxx blah blah blah xx, come to me and ask, did you say this? Often taken out of context, embellished, altered, whatever, so many hurt feelings have resulted from the insane urge some people have to tell things in a hurtful way. If someone said such a thing to me, I would check it out for validity, and have the opportunity to explain or dismiss it.
Anyway, yes your sister has definite problems. The suicide needs to be checked out by a pro. You can't do it for her. Distance yourself.
Post Edited (Trying to Understand) : 11/1/2010 10:35:28 AM (GMT-6)