Originally Posted by The Guard
Or it's a movie...a rather heightened Tim Burton movie, where she was shown surviving several traumatic incidents, and had one "life" left, and for poetic license, they had her survive.
No, the "it's a movie" excuse doesn't wash. The other incidents she survived could plausibly be survived, like landing in a pit of soft sand or falling through several awnings to break a fall.
However you don't take four gun shots to the body at close range and run and climb about with athletic energy on the rooftops of Gotham shortly afterward.