You definitely have my sympathy and prayers...my daughter just moved to a halfway house a couple of weeks ago after intensive drug treatment. Prior to that, she was in prison for a year. She even burglarized my house for drug money.
Been there, done that. It is devestating to watch your child self destruct. The road to the realization that you can do nothing to save him is a long one.
No matter what your brain tells you, your heart tells you something else. Best wishes and prayers for your daughter and the rest of your family. Meth can turn a home upside down like nothing else.
I had a cousin who had the gift of charm and brains but he just had to associate in the drug culture, it's people, and it's behaviors. His parents sent him everywhere they could for treatment. One of the problems with speed is that it tends to encourage it's users to engage in behaviors they would not do so in a state of clearer thinking. The body, mind, spirit, and soul never rests to find balance.