Should i call her out on it or let it go?

Okay so I have this friend and she seems pretty nice at school (although she can be a b**ch) but then at this jewish youth group thing my sister does, she is a sl*t and everyone hates her. I didn't judge based on what my sister said, but at my school...

she always gets her way and gets away with being a b**ch. I was in a show at school with her and she was wearing a very noticable rainbow ring, so I kindly mentioned once that she may want to take it off. This was last night. Tonight, she came storming into my sister's youth group and was like, OMG I'm going to f**king kill you sister!! She was b**ching at me about this stupid ring all night! She is such an a**hole!! Everyone that was in the show with me knows that this is uttlery untrue, and so does my sister. What should I do? Call her out on it, or just let it go? It would feel nice to make her the short end of the stick for once, but I don't want people to see me as a b**ch either (at school) even though some people already hate her. So???

well one thing I think you should let it go because then it would just get worse than it already is.

some people are just their own worst enemies, I have crossed things like this a lot.
I usually take a few steps back, calm down, and take a rational look at the situation.
the questions I ask myself are.
how important is doing what needs to be done?
are my motivations in this persons best interests, or my need to put them in their place?
what will most likely come of it, will it change the persons behaviour?
is this really worth doing something about?
ok, all that being said, we sometimes have to be a little better than some of these self destructive people.
sometimes the best course of action is a direct confrontation.
but sometimes leading by example, and not stooping down to that persons level is the best- showing restraint and tolerance.
some bi*$#$es just don't get it, some never will get it, and you will feel utter frustration at their inablility to be better.
you are the judge here- is this something you can overlook?
is this really worth having the drama over?
maybe you just need to ignore her, and just walk away if you can.
good luck

leave it, however if it comes up again or she is like that again, then call her out on it

It is obvious she should not be considered a 'friend' - a friend cares and looks after your best interests - from what you said she appears to be mentally unstable - I would distance myself from her...Good luck !!

Well if she keeps saying it, say that she needs to stop because no one likes her and that she is a b*** and needs to stop!! unless she 4gets about it!!

let it go this time, but if it happens again then call her out on it, everyone in your sisters youth group will understand and will probobally like to see her get some of her own sh*t, if shes a b*tch then she needs someone to stand up 2 her!

just let it go and trust me I know how you feel (sorta but I'm in a diff situation) Prove to the others that your a better person and as much as this gets to you try not to show it. The fact that you show it gives her the satisfaction the she has rule over you.

but all in all just talk to someone and if it comes to the worst case senerio BEAT THE LIVING CRAP OUTTA HER!!! but thats a last resort

Basically know that she is NOT a great friend.We should always try to surround ourselves with positive knid people. Or that whole guilty with assciociation thing comes up (sry bad spelling!). LET IT GO really, she can go be as mad as she wants but really if you keep the cool head you'll be fine.