I am so sorry to read what you and your family are going through. Stress does so many things to people. I'm glad you and your daughter are going to see the therapist and I hope that he/she can help your daughter navigate this stressful time in her life and help her find other ways to relieve the stress.
Keep up the good work and stay positive. I think you've got a good handle on your situation and know exactly what you need to do to keep you and your girls safe and happy.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.