I moved in with my boyfriend at 17 and we lived literally 30 seconds from our favourite club so everyone used to crash at ours and we had regular parties. The first one was a bit slow to start but the next few were MENTAL, there would end up being about 50 people crammed in our tiny flat, silly string everywhere, so much drink and pot and the music was so loud the pub a couple of houses away asked up to keep it down.
Eventually it all went tits up, at the last one someone put something in the punch, everyone was going crazy and puking everywhere, they spilt beer on my hifi, and some weirdo old guy had somehow got in (no-one knew who he was) and kissed someones 14 year old cousin who was virtually passed out drunk. It was AWFUL. Makes me shudder even now, we had to get the older guys to throw him out. Then the police were called because of the noise and people throwing things out of the windows, and everyone scarpered...
I won't even go into the mess the next day, the carpets were just ruined, and someone had ripped half the bannisters off the stairs as they fell down. I cleaned it all myself every time though! I must have been mad.
Funnily enough, as an adult I never have parties, not even sedate ones, and the music is never above TV listening level. I guess I learnt the best way by watching my own stuff get trashed!
That girl needs professional help though, I would NEVER have done that to my parents. Not even cos they would have killed me, and believe me they would have.