QQ vs Unknown on a coordinated board

[Kyriefurro]

Villain is a complete unknown. This is her second hand at the table. She won a very small pot the previous hand with aggression.

.25/.50 NLHE 6 max - 4 players
Hero has 341.15
BB has 51.80

Hero is on the Button with Q [img]/images/graemlins/spade.gif[/img], Q [img]/images/graemlins/heart.gif[/img]

Preflop <font color="blue"> (4 players) </font>: UTG folds, Hero <font color="red"> raises to $2 </font>, SB folds, BB <font color="red"> reraises to $6.50 </font>, Hero calls

($13.25) Flop <font color="blue"> (2 players) </font>: 7 [img]/images/graemlins/club.gif[/img], 8 [img]/images/graemlins/club.gif[/img], 6 [img]/images/graemlins/heart.gif[/img]
BB bets $10.50, Hero calls

($34.25) Turn: 8 [img]/images/graemlins/spade.gif[/img]
BB bets $34.80 (all-in), Hero.........?

My thoughts: Even though villain is an unknown, she probably doesn't 3-bet PF with 54 or T9, so I don't think she has the straight. Based on the action, I think I'm looking at an overpair 99+, or maybe an aggressively played AcKc/KcQc. I'm almost dead center in the pocket pair range of villain's hand, and if we include the AK/KQ possibilities, I'm in the top third. I'm getting 2:1 to call both the flop and turn bets, so if I assume I'm a coin-flip to win, this is should be a call. Right?