small overpair EP vs nitty type

villain 1s 12/6 over 66. 3 bets 4% 100% vs steals. zzzzzzoom.
think I overvalue overpairs?
turn bet gets calls from 9x not much of that 88, floated hearts. too thin?
river is obvious fold cos I beat nothing that bets.
Id prolly C/F AA here. meh

$0.10/$0.25 No Limit Holdem
PokerStars
9 Players
Hand Conversion Powered by weaktight.com

Stacks:
UTG ($25.28)
kick (UTG+1) ($25)
MP1 ($9.10)
MP2 ($38.48)
MP3 ($18.83)
CO ($25)
BTN ($27.02)
SB ($32.80)
BB ($32.24)

Pre-Flop: ($0.35, 9 players) kick is UTG+1
1 fold, kick raises to $0.75, 1 fold, MP2 calls $0.75, 3 folds, SB calls $0.65, 1 fold

Flop: ($2.50, 3 players)
SB checks, kick bets $1.50, MP2 calls $1.50, SB folds

Turn: ($5.50, 2 players)
kick bets $3, MP2 calls $3

River: ($11.50, 2 players)
kick checks, MP2 bets $5.75, kick folds

Final Pot: $11.50

MP2 wins $16.73 (net +$5.73)

SB lost $0.75
kick lost $5.25