NL25 flop 2 pair, bet river???

[Panic__NL]

Do I have to bet this river or was the check behind the right choice??
no reads on Villian



Party Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
5 players
Converter (http://www.neildewhurst.com/hand-converter)

Stack sizes:
UTG: $25
Hero: $24.65
Button: $48.95
SB: $28
BB: $48.35

Pre-flop: (5 players) Hero is CO with T/images/graemlins/heart.gif 9/images/graemlins/heart.gif
UTG folds, <font color="#cc0000">Hero raises to $1</font>, Button folds, SB calls, BB folds.

Flop: T/images/graemlins/club.gif 2/images/graemlins/club.gif 9/images/graemlins/diamond.gif ($2.25, 2 players)
SB checks, <font color="#cc0000">Hero bets $1.75</font>, SB calls.

Turn: J/images/graemlins/diamond.gif ($5.75, 2 players)
SB checks, <font color="#cc0000">Hero bets $3</font>, SB calls.

River: A/images/graemlins/diamond.gif ($11.75, 2 players)
SB checks, Hero checks.

Results:
Final pot: $11.75

[payoffwizardAA]

Looks like a low pocket pair to me. Checking it down seems like the right play to me because you're only going to get called (or raised) with a better hand.