as we saw kk, money is gone. we know that one of rahul's daughter was asking for money.becoz she needed it, becoz some1 was blackmailing her. rahul denied to give her and then went for dada jee's room. so it might be the reason that pam might have stolen from kk's locker becoz she recieved a phone call,some1 was blackmailing pam. so she might have needed the money to stop her self from being black mailed.
so might be that pam was giving the money to goon, and antra saw goon as she is too scared of goon her self,she got scared as she always think that goon is gonna kill her child. so antra saw pam giving goon money and when pam go back, antra killed the goon. but how?we dont know that.but that is y she has blood in her hands.but pam doesnt know abt antra killing goon becoz she has given goon money and gone back to her room.