Well if you're an addict, you already know she won't quit unless she wants to- not for a parent, not for a boyfriend, but for her- that's the only way to lasting sobriety. And I'm sure you already know you can't control something you have no control over- that's the whole 1 a day thing, despite how many promises, and despite the best intentions.

The long-term dangers aren't from withdrawal, they're from abusing the drug itself. At 19 and only at 100 mg, I don't think it's a big issue just yet, but it's only a matter of time.

Sit down with her and tell her your story if she doesn't already know it. While she may not need a medically supervised detox, it certainly would make it more comfortable. But that's not the battle- the battle is staying clean- and it seems like that's something she has not been able to do. That's why I think rehab- at least outpatient rehab- is a better idea. But only if she's ready.

-yawkaw