[Giantflowers]

Ive been trying to find out what this film I saw a few years ago is called. I don't know who is in it I only know the general plot. There are these girls and they are having a sleepover at one of their houses while the parents are out. One of the girls go to bed earlier then the others. Once she has gone to bed they start to slag her off and come up with a revenge sceme. They then go upstairs to the sleeping girl and put lsd in her drink and they make her drink it. They then wake her up and pretend that they can't see her. She starts to go on a bad trip and eventually runs into a living room mirror and a shard of glass stabs her in the heart and she dies. The other girls start freaking out and the dead girls mother comes home from being where ever she was and then the film ends. If anyone can help me I will be very grateful. :)