Pill adiction...

So one of my friends has a bad pill addiction. She takes at leats 15-20 a day. Shes wanting to ween herself off because of all the money and trouble shes been in with them. She already wrecked 2 cars in 4 months. What are some ways she can kick the habbit herslef and not go to rehab? She said the withdrawls are horrible and she cant handle it. Any home remedies to help her?