Roomate Quarrel

So I live with 3 other roommates in a two bed/two bath, apparently the roomate that's sleeping in the same room as me, had her mother come over. Her mother had found a condom under the bed and she blamed me for it. I have a boyfriend who lives 900 miles away, while this girl sleeps with 4 men in one week and then throws me under the bus because her mom can't find out her precious daughter is a "serial hoe"...HELP WHAT SHOULD I DO BEFORE I CHOKE THIS HOE OUT #Frustrated #WakingUpToStrangeMenInMyRoom #OtherRoomiesAreAngryToo