NL100 flopped middle set on Drawy board

[SquishyPeach]

Btn is 20/14/2.34 over 1600 hands
MP is a complete donk that just sat down like 20 hands ago

Full Tilt Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker Hand History Converter)

Hero (SB): $115.20
BB: $83.30
UTG: $91.20
MP: $115.70
CO: $98.50
BTN: $178.00

Preflop: Hero is dealt 8[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/diamond.gif[/img] (6 Players)
UTG folds, <font color="red">MP raises to $2.00</font>, CO folds, BTN calls $2.00, Hero calls $1.50, BB calls $1.00

Flop: ($8) 9[img]/images/graemlins/spade.gif[/img] 8[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] (4 Players)
Hero checks, BB checks, <font color="red">MP bets $3.00</font>, <font color="red">BTN raises to $13.00</font>, Hero calls $13.00, BB folds, MP calls $10.00

Turn: ($47) K[img]/images/graemlins/diamond.gif[/img] (3 Players)
Hero checks, MP checks, <font color="red">BTN bets $45.00</font>,

Whats your play now???Do you reraise the flop???