Villian is tight-passive. The river call is easy due to the 6.5:1 odds I'm getting, right? Can I fold to the turn check-raise?

Party Poker No-Limit Hold'em, $ BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP2 ($46.25)
MP3 ($39.74)
CO ($130.18)
Hero ($55.95)
SB ($30.65)
BB ($24.50)
UTG ($116.89)
UTG+1 ($84.26)
MP1 ($55.55)

Preflop: Hero is Button with A, A. SB posts a blind of $0.25.
2 folds, MP1 calls $0.50, MP2 calls $0.50, 2 folds, Hero raises to $2.5, 2 folds, MP1 calls $2, MP2 folds.

Flop: ($6.25) 6, Q, 9 (2 players)
MP1 checks, Hero bets $4.5, MP1 calls $4.50.

Turn: ($15.25) 5 (2 players)
MP1 checks, Hero bets $10, MP1 raises to $20, Hero calls $10.

River: ($55.25) 6 (2 players)
MP1 bets $10, Hero calls $10.

Final Pot: $75.25