flop sizing+line check...

what do you do with your range on this Turn?

$2/$4 No Limit Hold'em Cash, 5 Players.

SB: (203.7 bb)
Hero (BB): (214.2 bb)
MP: (97.4 bb)
CO: (166.5 bb)
BTN: (100 bb)

Preflop: Hero is BB with 9s 9d
2 folds, BTN raises to $12, SB folds, Hero raises to $44, BTN calls $32

Flop: ($90) 6h 3c 5s (2 players)
Hero bets $52, BTN calls $52

Turn: ($194) Ad (2 players)
Hero checks, BTN bets $80, Hero calls $80

River: ($354) 5h (2 players)
Hero checks, BTN bets $224 and is all-in, Hero...