FRIENDS 'TIL THE END (1997)

Heather and Suzanne were childhood friends, both singers, who have always been competing against each other. The insecure Suzanne, who usually lost all the competitions, grows emotionally disturbed and hyper-competitive and carrying a grudge against Heather. The young woman, under a false name, enrolls the same college where Heather goes, with the intention of destroying her life...