Id say, tell the uncle who is bumming them off her, tell him to fuck off and either get his own script or get them elsewhere! That isn't right... But your grandma, being on something such as oxy, is totally normal, and there is nothing wrong with that, if she is in legitimate pain.. Weed is not an ideal painkiller for the majority of people.. this makes me think of my grandma, who is also addicted to oxycodone, and has been for like 20 years... Percocet.. she cant live without them, and even the thought of weed makes her mad, she doesn't know that weed, is not a harmful drug, because of the naïve generation she grew up in, which made weed seem just as bad as any other drug off the street to so many older people, she is 93! she has broken every bone in her body, some of them more than once, not exaggerating, over time she has been in so many accidents, and because she is very small, her bones aren't and never have been very strong!
So I say let her be, and don't make her suffer through pain, if oxy helps her! its not worth all of that, she will be suffering! trust me, oxy withdrawl sucks, and I cant imagine it would get better with old age! She seems like she really needs it, and all of what she is scripted, so tell your uncle, or have someone tell him.. that taking pills from his grandmother who is in pain, and REALLY actually needs them, not to mess with her supply anymore.. chances are, she will not like the idea of weed, if she is like the majority of older people who think weed is just to get stoned.. yes it can help with pain, but only with some people... so keep that in mind, all of the pain she would have to go through, before switching oxy with weed actually made any sort of improvement, if it even would... it might not even do a thing for her pain, and then she would most likely go right back to oxy.. If anyone should be on oxy, its older people in pain.. Keep in mind, a lot of my thoughts on this, have to do with my grandma, and what I have seen with her, on oxy.. she is fine with it, but in terrible pain and miserable without it, and loving her as much as I do, I would never do anything to try and stop her from taking a perfectly safe painkiller... as long as your grandma just takes them, orally, as prescribed, there is most likely nothing at all to worry about, except your uncle... hope it works out for you and your grandma!