correct play on this hand?

[All_In... 0]

0.50/1 Texas Hold'em Game Table (Limit) Seat 2 is the buttonTotal number of players : 9Seat 1: stubby9964 ( $23.75)Seat 2: kyouzo ( $47.25)Seat 4: st101 ( $34.50)Seat 5: Hardways33 ( $25)Seat 6: MavrickT2 ( $21.25)Seat 7: tryzme ( $19)Seat 8: beef2005 ( $15)Seat 9: Stew96 ( $13.75)Seat 10: Devito21 ( $31.57)st101 posts small blind (0.25)Hardways33 posts big blind (0.50)** Dealing down cards **Dealt to st101 [ Qh, Qs ] MavrickT2 folds.tryzme calls (0.50)beef2005 calls (0.50)Stew96 folds.Devito21 folds.stubby9964 folds.kyouzo folds.st101 raises (0.75) to 1Hardways33 calls (0.50)tryzme calls (0.50)beef2005 calls (0.50)** Dealing Flop ** : [ Tc, 6s, 9d ] st101 bets (0.50)Hardways33 calls (0.50)tryzme calls (0.50)beef2005 calls (0.50)** Dealing Turn ** : [ 6h ] st101 bets (1)Hardways33 folds.tryzme calls (1)beef2005 calls (1)** Dealing River ** : [ 4c ] st101 bets (1)tryzme raises (2) to 2beef2005 folds.st101 calls (1)** Summary **Main Pot: $12.25 | Rake: $0.75Board: [ Tc 6s 9d 6h 4c ]st101 balance $30, lost $4.50 [ Qh Qs ] [ two pairs, queens and sixes -- Qh,Qs,Tc,6s,6h ]tryzme balance $26.75, bet $4.50, collected $12.25, net +$7.75 [ 3c 6c ] [ three of a kind, sixes -- Tc,9d,6c,6s,6h ]-------------------------no re-raise on the turn made me think he didn't have the 6. did i play this wrong anywhere?it was a no-brainer to call the riv bet, right? i know there's a similar thread around now, but i think even tho i 'knew' he had a 6, i had to pay it off........

[Swift_Psycho 1]

This seems pretty standard. NH.