TPGK against a set, I guess...

Villain is 23%/6.5%/1 over 92 hands.

Standard? Do you bet more like 1/2 pot on the turn after the smooth call? Is the river blocking bet worth it here?

Cryptologic
No Limit Holdem Ring game
Blinds: $0.15/$0.25
7 players
Converter

Stack sizes:
UTG: $36.90
UTG+1: $19.80
MP1: $24.75
Hero: $26
Button: $46
SB: $24.10
BB: $25

Pre-flop: (7 players) Hero is CO with Q A
3 folds, Hero raises to $1.25, Button calls, 2 folds.

Flop: A 2 7 ($2.9, 2 players)
Hero bets $2, Button calls.

Turn: 5 ($6.9, 2 players)
Hero bets $4.5, Button calls.

River: 9 ($15.9, 2 players)
Hero bets $5, Button raises to $18.25, Hero folds.
Uncalled bets: $13.25 returned to Button.

Results:
Final pot: $25.9

yeah, that looks right. turn bet is fine. too many ways to be losing here, I don't commit a lot more chips at the end.

Could be one of three things:

1) a set
2) A9 (probably SUITED, maybe even clubs) paired its kicker after hesitantly calling with a weak one
3) A broken flushdraw pushing you off top pair because he has a note saying "Weak tight nit, can be pushed off hands easily" (just kidding). The bet says "don't call me", if he wanted TPGK to call he would have probably raised to like 10-12$. Well, anyway, I would fold without a read here.