1/2 deep: top set turn scare card in a big pot

[2handed]

1/2 500 dollar effective stacks, 4 handed. I havent played with villain much, but she hasnt gotten out of line as far as I can recall/

I limp JJ96 UTG, SB raises to 4, BB raises to 14, We both call.

Flop (50): J 8 5 two diamonds I have none:
SB checks, BB bets 50, I raise to 200, SB folds, BB calls.

Turn A off suit (450) She pushes for close to 300, I call.