i need some Fanpop ppl help!!

ok, so this past week me and friend were in a fight bcuz in the hall it was really noisy and i сказал(-а) something to a frined that to her sounded like "Your hair is ugly" или something like that. So like the день after we made up this really nosy girl name Sarah came up to me and сказал(-а) "Oh my god u did not have to make fun of Cidnee's hair!" (my Друзья name is Cidnee's) and one its none of her busniss and 2 were not fighting anymore!! then she told me this a 3 days later but still acted like my friend, just blaming me!! confusing i know! what should i do about Sarah!!??? HELP!!