Two pair vs a four-flush, heads up

[tyler_cracker]

Live 2/4. Table is loose passive. I don't think i've seen Villain fold on the flop yet; she's staying in with just about anything (she's also hitting draws left and right). Edit: for example, she limped with A5o, called 1 on a flop of K-8-7, then hit runner-runner straight. She usually bets when she has something. I can't remember if i've seen her throw in a check-raise or not.

Hero is MP with A [img]/images/graemlins/heart.gif[/img] T [img]/images/graemlins/spade.gif[/img]

Preflop: folded to Hero, Hero raises, folded to the blinds who call. Villain is BB.

Flop (6 SB): T 4 3 [img]/images/graemlins/diamond.gif[/img]

SB checks, Villain checks, Hero bets, SB folds, Villain calls.

Turn (4 BB): A [img]/images/graemlins/diamond.gif[/img]

Villain checks, Hero...?

What's the plan for the river?