Bottom set vs. Calling station, what's my turn line?

[Burdzthewurd]

Omaha Hi $0.50-$0.50 PL (real money)

Seat 2: BB ($83.25 in chips)
Seat 7: Button ($4.50 in chips)
Seat 8: Hero [5 [img]/images/graemlins/heart.gif[/img],4 [img]/images/graemlins/heart.gif[/img],9 [img]/images/graemlins/diamond.gif[/img],5 [img]/images/graemlins/diamond.gif[/img]] ($40 in chips)


PRE-FLOP
Button raises to $2, Hero calls $1.50, BB calls $1.50.

FLOP [board cards A [img]/images/graemlins/heart.gif[/img],6 [img]/images/graemlins/diamond.gif[/img],5 [img]/images/graemlins/spade.gif[/img] ]
Hero checks, BB checks, Button bets $2.50 and is all-in, Hero raises to $9, BB calls $9.

TURN [2 [img]/images/graemlins/heart.gif[/img] ]
Hero...

Button had busted 6-7 times for $10-$50 each time, on full-tilt and potting every hand with any 4, I'll take a shot 3-handed with small ds pairs.

Not the nicest flop for bottom set with a lot of straight draws available, BB wouldn't slowplay top or middle set, though.

Do most of you bet this turn? Seems like I'd be far more afraid of a 7,8, or 4 than a deuce.