Nitty AQ River fold? NL$100

[EasyAs1-2-3]

Early in match, maybe 15 hands in so no real reads unfortunately.

Villain is 40/25/2

Full Tilt No-Limit Hold'em, $1 BB (2 handed) Full-Tilt Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($115.60)
Button ($108.10)

Preflop: Hero is BB with Q, A.
[color=#CC3333]Button raises to $3.5, [color=#CC3333]Hero raises to $10, Button calls $6.

Flop: ($19.50) 9, Q, T [color=#0000FF](2 players)
[color=#CC3333]Hero bets $14, Button calls $14.

Turn: ($47.50) 3 [color=#0000FF](2 players)
Hero checks, Button checks.

River: ($47.50) K [color=#0000FF](2 players)
Hero checks, [color=#CC3333]Button bets $23, Hero folds.

Final Pot: $47.50

OK - so two things. First I'm thinking I def shoulda bet the turn, don't know why I didn't, seems like clearly the best play. 2nd I'm folding this river b/c it screams value but mostly b/c I've been making way too many calls on river value bets thus am prolly playing a lil soft. These mistakes on both streets?

Note - my standard flop bet is a lil bigger.