$16 when do i fold my QQ overpair

[kozip]

16$ buyin, villian ist unknown 2%ROI player

PokerStars Tournament, Big Blind is t20 (9 handed) Converter on pregopoker.com

UTG (t1550)
UTG+1 (t1440)
MP1 (t1740)
MP2 (t1140)
MP3 (t1600)
CO (t1470)
Hero (t1470)
SB (t1660)
BB (t1430)

Preflop: Hero is in Button with Q[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/club.gif[/img]
<font color="gray">UTG folds</font>, <font color="gray">UTG+1 folds</font>, <font color="gray">MP1 folds</font>, <font color="gray">MP2 folds</font>, <font color="gray">MP3 folds</font>, <font color="gray">CO folds</font>, <font color="red">Hero raises to t80</font>, SB calls t70, <font color="gray">BB folds</font>

Flop: (t180) 7[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/diamond.gif[/img] (2 players)
SB checks, <font color="red">Hero bets t120</font>, SB calls t120

with QQ in my pocket i like this board. i valuebet and i protect here against any kind of daws (one pair drawing to two pairs or trips, low connected cards drwaing to a straight)

Turn: (t420) 5[img]/images/graemlins/spade.gif[/img] (2 players)
SB checks, <font color="red">Hero bets t280</font>, SB calls t280

i dont like this turn, as it makes straights possible, but i think i have to valuebet and to protect my overpair here. so i dont check behind but bet 2/3 pot

River: (t980) 7[img]/images/graemlins/diamond.gif[/img] (2 players)
<font color="red">SB bets t1180 (All-in)</font>, <font color="gray">Hero folds</font>

this low card, pairing the board ist terrible. the straight has arrived on the turn, now the trips has come. can i call this river-donk bet?