100NL - QQ on paired flop

villian is 40/11 over a small sample

$0.5/$1 No Limit Holdem
9 players
Converted at weaktight.com

Stacks:
UTG ($92.30)
UTG 1 ($40.43)
MP1 ($104.50)
MP2 ($165.55)
LP ($17.00)
Hero ($113.60)
BTN ($94.50)
SB ($22.00)
BB ($31.25)

Pre-flop: ($1.5, 9 players) Hero is CO
UTG calls $1 ($91.30), 4 folds, Hero raises to $5 ($108.60), 3 folds, UTG calls $4 ($87.30)

Flop: ($6.5, 2 players)
UTG checks ($87.30), Hero bets $9 ($99.60), UTG calls $9 ($78.30)

Turn: ($24.5, 2 players)
UTG bets $10 ($68.30), Hero calls $10 ($89.60)

River: ($44.5, 2 players)
UTG bets $15 ($53.30), $15 to Hero ($89.6)?

Call. NH. I don't see a raise anywhere postflop.