PandaLiang: She certainly would not be the dumbest bank robber. I mean......she actually succeeded.
bevinator: The banks are all insured; they don't care if someone takes the money. It's no loss to them either way. Robbing a bank is actually just robbing the FDIC by proxy. The only thing banks care about is making sure nobody gets hurt. Thus robbing a bank is ridiculously easy, but actually getting away with it is substantially harder.
Wouldn't their premiums go through the roof if the were successfully robbed? Granted, $6000 is peanuts to a bank, but in the event that someone tries to make off with a substantial amount, wouldn't it be in the bank's interest financially to try and stop them?