best friend trouble/ crimes

I'm a senior in high school and there's this girl I've been really good friends with for two years but for the past six months we haven't been close due to some of the lies I've caught her in.. well the other day she came up to me and said she vandalized 2 cars over the weekend (this girls and her mothers car) this is all over a guy. I told her what she did was disgusting and I didn't want to be associated with someone who commits crimes.. well anyways she now makes faces and me and says smart remarks to me and she also has turned everyone against me. I don't know what to do, personally that's against my morals but now everyone is taking her side and she's pushed everyone away and made them dislike me.. What should I do?