QQ PF Decision (100 NL)

[WCGRider]

Original Raiser is unknown, cold caller is one of the best at these stakes imo.
PokerStars No-Limit Hold'em, $1.00 BB (8 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP2 ($57.50)
CO ($125.15)
Hero ($99.50)
SB ($94)
BB ($48.95)
UTG ($57.70)
UTG+1 ($96)
MP1 ($65.10)

Preflop: Hero is Button with Q[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">UTG raises to $4</font>, <font color="#666666">3 folds</font>, CO calls $4, <font color="#CC3333">Hero|Button raises to $16</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">UTG raises to $57.7</font>, CO folds, Hero|Button ???

2:1 with QQ vs an unkown, whats the plan?