This could have ended poorly. I'm the type who freaks out when they are scared. Not the good type of freak out either. I mean that I freak out violently. Good thing this family didn't have a gun in the house. This girl might have shot her own mother, all for a prank. I'm not saying it's not funny, but I am saying that you shouldn't ever do this to me or else some violent things might happen.
I can't imagine how scared this girl must have been. Dealing with an intruder is anyone's nightmare, especially a woman. Women have much more to worry about when an intruder comes into the home. As far as pranks go, this one is an A+ for being so nasty, but also a huge F for being so nasty at the same time.