a $20 raise in 2/5nl is small enough to induce a 3-bet from JJ/QQ type hands. Whether I 4-bet or not will have to do with my image and if I think a 4-bet turns my hand face up as KK/AA.
She has a tournament player's history and these kind of players will play JJ/QQ like the nuts post flop as long as there is no A or K on the board. So most of the time we will get a favorable flop to extract nice value out of JJ/QQ. Obviously it sucks when we run into AA.
Personally, I think I flat here because I want to keep JJ/QQ hands in her range. I'd be more likely to 4-bet if my image was loose or I had a losing image.
As played, puke fold flop
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Lastly, 4-bet/folding to her isn't terrible by any stretch