nl100: flopped straight on flush board

[Ostarr]

Grabbed byHoldem Manager
NL Holdem $1(BB) Replayer
SB ($104)
BB ($79.60)
UTG ($116)
UTG+1 ($100)
CO ($36.15)
Hero ($102)

Dealt to Hero K:diamond: J

fold, fold, fold, Hero raises to $3, fold, BB calls $2

FLOP ($6.50) Q 9 T

BB bets $3, Hero raises to $12.75, BB calls $9.75

TURN ($32) Q 9 T A:club:

BB checks, Hero bets $21, BB calls $21

RIVER ($74) Q 9 T A:club: 5:spade:

BB bets $42.85 (AI), Hero ?