i dont remember her being any easier honestly... i think maybe she doesnt get wing buffets, but the drow you have to fight simultaneously kinda make up for it adn iirc she still gets breath and everything else. i might be wrong since i rarely kill her and its been a while since ive played such a party, but i thikn she ended up being a little tougher. its nice though to have her smaller for sure.

Ardulace doesn't ask that you kill her.

It is indeed possible to kill Adalon after giving her the Eggs, although there is no conversation option to do so. I suppose you could do it while fighting the Drow, though I've never done that, I think it's more fun to whack the Drow myself. I have done it after she transports you to the Exit, with no Drow present, although that method is tricky, to say the least.

Or you could just drop the eggs on the floor outside her lair, or even at the top of the stairs..

This opens up the whole, "Oh they where just yummy, whens the next batch?" or rather it should open up that dialog option.

there's some poorly tadpoles over in some of the western tunnels that would really appreciate some eggs i'm sure . . .