No-Limit Hold'em, $0.50 BB (6 handed)

Villain is 35/28 over 54, attempt to steal is 69%. How would you have played it?

Hero (BB) ($50)
UTG ($58.89)
MP ($42.65)
CO ($44.75)
Button ($54.09)
SB ($53.70)

Preflop: Hero is BB with A, Q
4 folds, SB bets $1.50, Hero calls $1.25

Flop: ($3.50) 4, A, 4 (2 players)
SB bets $3.25, Hero calls $3.25

Turn: ($10) K (2 players)
SB bets $7, Hero calls $7

River: ($24) 5 (2 players)
SB bets $17, Hero ?