First - the parent acted negligently and could get in trouble for putting a child at risk.
Second - the bank staff is responsible for putting the bank and its money at risk. They could/should be fired for negligence.
Third - Mary is responsible for putting herself in a situation in which she has little control and for acting in a way that might provoke men. But I don't know where anyone is supposed to go from there.
The 3 situations aren't quite the same though.
In 1, a child is involved who can't defend themselves and the person was a known pedophile. Children need guardians because they can't sufficiently understand all the dangers and protect themselves.
In 2, the responsibility and punishment would be coming from the employer, not the legal system. Also, it's not unreasonable to think that people will take money if they have the opportunity.
In 3, is the assumption that men will rape any drunk girl they meet (like the assumption is made on theft in 2)? Is the fraternity known to have assaulted women in the past (like the offender was known to have molested children in 1)?
What's the proposal for Mary? What practical difference does it make if the women was drunk at a frat party and got raped or if she got jumped while walking home from work and got raped?