Hopefully you can take her straight to rehab from jail...I know from experience that if they are sick and get the chance...they WILL use. I'm so sorry you are going through this, I know how it feels...remember picking my AS from jail...hearing the whole way home how he was done with the lifestyle and then seeing him walk out the door to hook up with one of his user friends.
Still praying for you..please let us know how you are doing...