Betrayed by my sister...what should I do?

HAHAHAHAHAHA I'm sorry, you have to forgive me for laughing. That was a good laugh. But anyway, moving on to your sister. You should beat her *** for that one. IT sounds like she knew what she was doing and that's probably why she never showed up, and never called you. Beat her ***, and tell her that if she EVER does that again, you will take her to her next life and that if it means going to prison she will still be dead for messing with you like that.