So my cousin, who I consider to be more like my little sister just told me that she has been using extacy as a fall back drug. She told me that when ever any time in her life gets rough she turns to it to fix it.
If things were just recreational and a some of the time thing, I wouldn't mind but its been going on awhile and I'm worried.
What do I do?
Tough situation.
Do nothing and it will get worse or resolve itself.
Do the wrong thing and it may destroy the close brother/sister relationship you have.
Showing concern will make it seem as though you are telling her she can't take care of herself. What you want to do is just reassure her that you know she can kick the habit because you know how strong she is and how much she wouldn't want to hurt the people that care about her by getting herself killed.
Information is your friend. 99% of all ecstasy has other psychoactve drugs in it. About half of all ecstasy pills actually contain no MDA, MDMA, or MDEA. Many people deny this vehmenantly. I've seen people mix a batch and press pills that had no MDMA in it and then sell it as ecstasy. The most common things found in counterfiet ectasy are PCP, Ketamine, Meth, cocain, heroin, Caffine, and DXM.
It's a drug cocktail and it can kill you.
However, the situation really isn't as bad as you think, death via MDMA is not very common. First of all because Real pure MDMA is not common. Secondly it's not neccesarilly the drug that kills you. Most commonly, people die from heatstroke. Perhaps the second most common cause of death (significantly less common than heatstroke-related) is Hyponatremia, sometimes called "water intoxication."
I would probably try and find out what problems she is running from and help her solve those problems, thus eliminating her need to run. I hope things work out. Good luck to ya.