Effective, but a waste of a good laptop.
Format c: or taking the hard drive out would be just as effective. Then when she whines about her computer not working, ask her to pay you to fix it... $130 for the upgrades + labor.
No money, get a job. That's the real world.
Pay for household chores. Sure. Come up with a fee per task schedule or Volunteer to give her $10/hour of actual work - it's more than minimum wage...
By the way, meals now cost $5 each.
Your portion of the phone, Internet, tv, etc. is going to be... No pay, no access.
You get the idea.
Rm