Thanks, everyone. An SSD is a great idea. I think I added RAM about three months after she bought it. 4GB came with it and that was terrible. I'll have to check if it takes more than 8.

Apparently it's running a little better now after one last restart, so maybe something was running in the background. Not sure.

Anyway, an SSD upgrade is the perfect thing to get this thing limping along until Apple decides what (if anything) they want to do with the Mac Mini...