And knowing your heart from seeing you here, I bet that you're fighting with yourself over your inability out-of-state to impact the childcare situation for the daughters kid(s).
Tough spot. Drugs are the scourge of our society for sure. They respect nobody. They are an equal opportunity destoryer..just like Satan himself.
All we can do is keep praying for your daughter to have insights and some ephiphany, and your ex-wife, strength, wisdom, peace and the Holy Spirit ministering to her needs to keep her centered.
Blessings to all of you for strength and resolve.