need helpp

my bestfriends mom got in a car accident 20yrs ago.. so she takes alot of oxycontin because her back is all fuckedup.. and me and my freind used to do oxy alll time.. then her mom found out and now she only gets it on occasion.. but she always has a little stash of it for every once in awhile.

me and her used to do oxy all the time and it makes us open up and we'd get fucked up and nod off and talk for hours.. then i started to get badly addicted and wanted it all the time.. she got fed up.. so i stopped. now she offers to do it every once in awhile and im fine with that.. im not addicted anymore.. its just im going to group 3 times a week for a year for alcohol abuse and today and tomorrow is probably the last time im ever going to be able to do oxy with her again.

does anyone know a way to ask her if we can do it a last time without sounding like a fiend???