random fish, overvalues hands

Full Tilt No-Limit Hold'em, $1.00 BB (9 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

MP2 ($57.85)
Hero (MP3) ($125.90)
CO ($70.80)
Button ($20)
SB ($100.35)
BB ($103.30)
UTG ($150.40)
UTG+1 ($155.65)
MP1 ($107.30)

Preflop: Hero is MP3 with Q, Q
3 folds, MP2 calls $1, Hero raises to $4.50, 4 folds, MP2 calls $3.50

Flop: ($10.50) 9, K, 9 (2 players)
MP2 checks, Hero bets $7, MP2 calls $7

Turn: ($24.50) 4 (2 players)
MP2 checks, Hero checks

River: ($24.50) K (2 players)
MP2 checks, Hero bets $20, MP2 raises to $46.35 (All-In), Hero ?