Those copper sleeves are crap. Buy her some joint juice if she doesn't want to take the Glucosamine. I take the Glucosamine with MSM every day and it seems to help. My pops drinks that joint juice every day and swears by it.
I'm gonna have to go ahead and disagree with you on the crap part.
My knee is a hamburgered up mess since before Christmas. Always had minor trouble due to being behind the plate in the baseball and softball days. Played golf and absolutely KILLED the ball in November. Drives were 40+ yards longer than normal. I could barely walk the next day. Lots of advil, lots of ice, two weeks of rest and the opinion of a PT later, I went back to the course. Killed the ball again. My normal drive is 210 yards. I hit three that were over 300 and my average was around 240. That was a month ago. Could not even bend my knee two days later (sorry Danerys, I won't bend the kneee). Most days I'm still limping to one degree or another now. I'm limping to the point that my entire leg ends up hurting.
I don't use the knee sleeve Favre's punk ass promotes, but I do use the Tommie Copper one. It's one of the few things that gives me relief. I used to numb it up with bio-freeze (which works) but I'd end up hurting worse when the freeze wore off.
I tried glucosamine but didn't notice any difference.