Prostitution.

Honestly, I tried to make a serious post three times, and all three times I could not make it thru without at some point suggesting your mom become a hooker, so instead I just said it as the first line to get it over with. Now that I got it out of my system...

Yahoo/MSN Games? I assume she can use a computer. My dad, who does not move around a lot, spends a ludicrous amount of time playing Spades on MSN I beleive, and they seem to have a pretty dedicated community, so its a way for her to make friends as well, albeit through the internet.

Crafting works, too. Hobbies like knitting and such are great time consumers, and not very expensive. Some of the more expensive crafting hobbies can also turn into money makers as well, which she may enjoy as it makes her feel more like she is contributing...

Just some ideas.

Ray