Anyone have any idea how to clean permanent marker from my computer monitor?

It's now ruined

rubbing alcohol

This may sound crazy, but usually you can get permanent marker off smooth surfaces if you color over it with dry-erase marker, I thought it was crazy too, but it works, it has something to do with the chemicals in dry-erase markers.

Well, you seem in a bit of a big problem. It depends on the type of permanent markers that your daughter used. Though I am not an expert in permanent markers, I have seen a few marks go by spraying a very high density spirit, like a lab alcohol, while some even go just by a normal spray perfume. I hope these work, but I can't guarantee that the mark will be gone. If it does please let me know. Hope for the best. P.S.: If it doesn't then your monitor is trashed. Even if it doesn't let me know.

spray some deodrants into cloth or tissue paper rub the surface ..might help u ...