Look at that almost gleeful look on Robin’s face.
It’s almost like they had a bet on to see if Batman could push a woman out a window and then leap after her a minute later to see if he could catch her.
I guess he can.
But that’s the only reason I can come up with for this scenario.
I mean, I guess he could be preventing a suicide, but that doesn’t explain why he was already in her house, and why Robin is just standing on the street looking up.