Just as mezza said, the first is a cooler (nothing you can do really). Because there is no way in hell I would fold KK at 2nl preflop. So there will be times when your KK runs up against AA. Nothing you can do.

The second I would consider tossing to the re-raise. But even then, if you did call and saw a flop, you can't continue there in a 3way pot facing a bet and a call with nothing but whiffed overs. What do you think they have to raise your bet preflop then bet on the flop? Whatever it is it beats your Ace high a high majorite of the time. And as you see even if you catch your Ace or Queen you aren't always good.