She's all tweaked out on ectasy and other stuff like that, based on that video she posted last week. That's not meth.
Molly or MDMA is not meth. A lot of pressed ectasy pills are FULL of meth. I would guess she is using the pressed pills. This is so sad and is very hard to look at.
She played a church girl in Saved. She wasn't in Easy A with Emma Stone, I just watched that last week. There is a church girl in Easy A, but it's definitely not Amanda Bynes.