2NL: QQ faces no agression until river

[JereLock]

No reads on villain

Poker Stars, $0.01/$0.02 NL Hold'em Cash Game, 7 Players
LeggoPoker Hand History Converter

SB: $4.92
BB: $2.76
Hero (UTG): $1.70
UTG+1: $1.17
MP: $2.48
CO: $0.85
BTN: $2.38

Pre-Flop: Q[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/club.gif[/img] dealt to Hero (UTG)
<font color="red">Hero raises to $0.08</font>, UTG+1 calls $0.08, MP folds, CO calls $0.08, 3 folds

Flop: ($0.27) K[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/spade.gif[/img] (3 Players)
<font color="red">Hero bets $0.08</font>, UTG+1 calls $0.08, CO folds

Turn: ($0.43) 9[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">Hero bets $0.20</font>, UTG+1 calls $0.20

River: ($0.83) 2[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, <font color="red">UTG+1 bets $0.30</font>, Hero ????


Wasn't sure how to handle this situation... He was calling down and showing no aggression, so I worried a bit and checked river. Probably a mistake.
Thanks for your help!