Dog training help pronto!?

I have a toy poodle named Roxxi and she's a very sweet dog. She's 9 months old. And we just got another dog named Trixie, a shitzoo poodle mix, but they dont get along at all! Every time they are in the same room, Trixie chases Roxxi around and they nip, bite and growl at each other! It's gotten to the point where they cant be in the same room anymore. I dont know what to do and we cant afford training for both dogs. I need to fix this problem fast before they end up hurting each other badly! So please help me! Any ideas will be appreciated. Thanks.