I'm so sorry about your daughter. If she really is sleeping with a drug dealer chances are she is doing drugs. That could explain her attitude toward the family. Drugs can really change a person.
Have you all thought about buying a home drug test for her to take? I'm not trying to scare you or bring you down any further its just a thought i had. Please forgive me if i was out of line.

As for the drawing omg, what can i say? It's so beautiful. You have an amazing talent. I envy you.