Could Development Of Bad Attitude In A Person Be Due To Over Dosage Of Hydrocodone?

Hi Doctor My daughter has a serious drug problem. She is mixing several energy drinks taking hydrocodone 6 at a time i dont know how many times a day and drinks lots of coffee. she has been stealing my hydrocodone meds i get for my headaches because of the wonderful care i received in 2011 .I was fliped floped and well I had the H1N1 swine flu i was in a coma 3 months. but she knowingly takes my pills i go with out and my head hurts she doesn t beleave me she has a bad attitude towards me now i think it is the drugs what do you think? how can i get through to her?