My prayers go out for your daughter, Susan, that she has the willingness to see this through and stay on a better path.
It seems the first couple of weeks are the hardest in rehab, that's often when they call to come home. Those who stay anyway are usually glad they did and have a change of heart once they begin learning better ways.
Take some special time for you when she has gone, I know it's been quite an emotional journey and now might be a good time to heal and find peace again.
Hugs