Should I stop speaking to my sister?
I have severe depression, anxiety, self harm and possible bipolar *haven't been diagnosed yet* my family is well aware of this but my nephew and my sister played a cruel joke on me that really worried me, when I found out it was all a lie ofcourse I am hurt, not mad but, hurt...now they are mad at me and treating me like I am a horrible person for being offended! The thing is my sister has done mean things to me for awhile and I keep forgiving her..but for my own sanity should I just stop trying? Thanks.
Yes. In your case, I think she has to relearn your boundaries as siblings. And this might be something you have to relearn too. And if you keep letting her cross the line, it will be hard for both of you to recognize those boundaries. Try to find a method that is comfortable to you, and be firm on your decisions. Good luck!