I know people who go on the roof to drink/chill/sunbathe/etc. But to be drinking and hang your feet over the ledge? And it sounds like she DRANK. WTF would you/your friend not see that it's an accident waiting to happen.
done that. also hung out on fire escapes. also used to jump between buildings to see how far I could get away from my own building (5 buildings).
I once got really drunk with a friend and we went to the roof to discover that somebody put a bail of hay up there (total WTF thing to have in NYC let alone leave on a roof). So we decided to use that as our drinking lounge until we got bored and started to body slam it until the bands holding it all together broke. Well, of course shit turned real after we went in, and the wind started to blow. Woke up and was dragging my hung over ass to work when I noticed that there was hay all over the street, sidewalk, and on all of the parked cars. Total "ummmmmm ... whoops" moment that morning.