[bigt439]

With her limping UTG and playing the flop the way she did I think you're up against a weaker ace a lot of the time if she is as bad you say. Sure it's a set sometime but I can't imagine folding here against the player you described. I'd call and push to a bet or check on the turn. It's doubtful that move is a FD. Again, if the players are as bad as the one you described your metagame calculations are unnecessary.