If we switched mom's I bet I could get her to stop bringing her over.
If she saved over my NFSU2 or Lego star wars 2 or Shrek superslam file; I'd kill her(not kidding either).
ONTOPIC: How about you hide your stuff and play some of your games that you dont care about. Its not that hard, I Just hide all my stuff in rolling rectangular crates I have under my bed. Nobody suspects a thing :3.