Overcoming Heroin Addiction

So, my mom has been abusing drugs since about 2010. She started with prescription pills and has moved to black tar heroin. She’s on the fast track to killing herself. Does anyone have any relatives that have overcome such a strong addition (or themselves).... and how did they do it? Are there any alternative methods that not many people know about?

(I’m an adult now and not in any way in danger.)