Some people are so sick that they don't do this voluntarily.
I dont think it is a matter of being arrested it is a matter of taking advice and seeking help....
This is a weird idea and I don't really know what I am talking about.But if she got arrested could she be forced into rehab? I am thinking (and this goes back many years) of a mother of two boys, both on drugs. Somehow she got the police involved. One of her sons recovered and is forever grateful. The other was lost to her. I don't remember what happened to him.
if you are supporting her habit, you are making a cripple out of her and soon it will end in strong stuff and later death i have seen these cases if she is under your roof you own the air she breathes tell her rehab or else because you love her and do not want to see her die, she will go to stronger stuff you know unless something or someone helps her she is to young for this i know it hurts but you must be firm kids have a way of getting around their parents and the parents want to beleive so bad they ignore the red flags luck jo
If you are supporting her and she lives in your house you can insist she gets help, you may need to get intervention help for her, it is her life and her health at risk, so be strong , go to seek help for her, ask your Doctor for a referal ,do it ASAP