QQ against very loose person

[YamiYugi]

The Villain is 47 VPIP, and kind of does maniac plays

Party Poker - No Limit Hold'em Cash Game - $0.10/$0.25 Blinds - 5 Players - (LegoPoker HH Converter)

<font color="black">Hero (SB): $24.50</font>
BB: $26.52
UTG: $14.40
CO: $56.75
BTN: $19.80

<font color="black">Preflop:</font> Hero is dealt Q[img]/images/graemlins/spade.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] (5 Players)
UTG folds, CO calls $0.25, <font color="red">BTN raises to $1.25</font>, <font color="red">Hero raises to $3</font>, BB folds, CO calls $2.75, BTN calls $1.75

<font color="black">Flop:</font> ($9.25) 6[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/spade.gif[/img] (3 Players)
<font color="red">Hero bets $5</font>, CO calls $5, BTN calls $5

<font color="black">Turn:</font> ($24.25) T[img]/images/graemlins/diamond.gif[/img] (3 Players)
Hero checks, <font color="red">CO bets $15</font>

Hero should...?