Fold the 2nd nuts??



Would you fold this hand? I thought it through and could not see anything other than a king high flush?

6 seat $100nl cash table.
1st pos has $88
SB has $215
I have $140

1st position puts in a raise of $4.
SB calls $3.50
I call the remaining $3 from the BB with Qd Jq
Pot is $12

Flop comes Ad 3d 4c

SB checks
I check
1st position bets $6
SB calls
I call
Pot is $30

Turn comes 2h

SB checks
I check
1st position checks
Pot is $30

River comes 8d
Bingo!
SB bets out $12
This is even better, she has picked up a small flush.
I make it $35 to go
1st position folds
SB puts me ALL IN! another $100!
I fold.
After my raise I just dont see her pushing here without the nuts. Considering I have QJ her highest flush possible apart from the King is 10 high. I dont believe she is bad enough to believe I am raising her with a 5. Tough one and a hard one for me to fold. The SB is not someone I consider a shark but she is a decent player, in no way reckless to this point whatsoever. Again though there is only one hand I can see calling the initial pre flop raise and that is exactly K10