value 3-bet on the river?

[xerber]

MP2 is weak-tight
BB is loose passive

Party Poker
Limit Holdem Ring game
Limit: Low
9 players
Converter

Pre-flop: (9 players) Hero is MP3 with J[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/heart.gif[/img]
3 folds, MP2 calls, <font color="#cc0000">Hero raises</font>, 3 folds, BB calls, MP2 calls.

Flop: 2[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/club.gif[/img] (6.4SB, 3 players)
BB checks, <font color="#cc0000">MP2 bets</font>, Hero calls, BB calls.

Turn: A[img]/images/graemlins/diamond.gif[/img] (4.7BB, 3 players)
BB checks, MP2 checks, <font color="#cc0000">Hero bets</font>, BB calls, MP2 folds.

River: Q[img]/images/graemlins/diamond.gif[/img] (6.7BB, 2 players)
BB checks, <font color="#cc0000">Hero bets</font>, <font color="#cc0000">BB raises</font>, Hero calls.

Results:
Final pot: 10.7BB

Should i really be afraid of the BD-flush? - c/r from a passive villain seems to be pretty strong.