after I returned from the bridge level I pulled out the heart and it showed there was a new bone charm. couldnt get to it though because I needed the old apartment key to get through a door. then I slept and when I woke up the bone charm no longer appeared when I pulled out the heart.
But I am curious where would that key be. looks like I missed my chance, but would be nice to know for the later playthroughs.
"Apparently the phrase "mile high club" equals sex to some and COD to others lol" -wretchedsmurf