That was me! Tell her not to park over the line (past the spot). It's already a small car and when you look down the garage lane, it looks like an open spot until you've driven right up to it, which can be pretty enraging when you find out it's actually taken. Middle of the parking spot would be fine. :P
I'm in there every day and see the car there most days. You should let her drive your car at least once so I can have a buddy in the garage.