AA

[shemp]

[ QUOTE ]
She would play AQ the same against me, maybe even AsKs. At least until the river.

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The goal posts are shifting. This passive person playing higher than usual 4 bets preflop and 4 bets the flop with AQ? Can she have KQ? Once the river hits you can rule out AsKs, so that's not relevant. Anyway, I guess you've answered the question what you put her on before betting the river: AA, KK, or AQ...

But one more question: Since you know that she will never raise a worse hand, and will call or check with some hands that you beat, why do you post this hand which you played so perfectly?