Fold river/ Correct play when it back flushes?

[chucky]

Party Poker
Pot Limit Omaha Ring game
Blinds: $0.10/$0.25
8 players
Converter


Stack sizes:
UTG: $13.35
UTG+1: $13.22
MP1: $14.53
MP2: $6.24
CO: $31.24
Button: $17.77
SB: $17.86
phanekim: $10


Pre-flop: (8 players) phanekim is BB with 6s 5c Kh 8c
2 folds, MP1 calls, MP2 calls, 2 folds, SB calls, phanekim checks.


Flop: 7d 3s 4d ($1, 4 players)
SB bets $0.25, phanekim raises to $1.7, 2 folds, SB calls.


Turn: Js ($4.4, 2 players)
SB checks, phanekim bets $4.2, SB calls.


River: Qs ($12.8, 2 players)
SB bets $5.71, phanekim ?