I don't see why she played it so horribly. She was first to act in a multi-way unraised pot, where it was very likely that somebody had hit the board (an A flopped). What's wrong with her check? I would check that and feel that somebody would just have to bet that.
Again, on the turn, I think she played it well. She figured that all those people wouldn't be able to help but take a stab at the pot. Plus, she had the near nuts, so any risk at slowplaying is gone. Cold calling the raise is always a bit odd, but raising is almost certainly going to take that thing down. Also, somebody with the trips and a bad kicker might really just want to call that $16 looking to pick off a bluff, but not wanting to make the pot any bigger, with just the trips.
And, why not CR the river? The hero had shown strength, so it's fine to check to him once more.
so what she checked two pair on the flop
Again, on the turn, I think she played it well. She figured that all those people wouldn't be able to help but take a stab at the pot. Plus, she had the near nuts, so any risk at slowplaying is gone. Cold calling the raise is always a bit odd, but raising is almost certainly going to take that thing down. Also, somebody with the trips and a bad kicker might really just want to call that $16 looking to pick off a bluff, but not wanting to make the pot any bigger, with just the trips.
And, why not CR the river? The hero had shown strength, so it's fine to check to him once more.