She wanted to hurt the boy, make him suffer for his fathers sins, but she knew too that it would hurt just as much for them to find him dead.
"You're a dear little thing aren't you...he must care for his sons deeply. Hiding you all away from me...But the world is turning to dust don't you see"
She grabbed him then, around the throat, wand to his neck and tilted her head just slightly, eyes dark, glinting with pure madness
"Bet Mummy cries, D'you think she'll cry"
She pushed the boy away from her, to the ground and then focused her rage and her hate into the weapons they were.
"Avada Kedavra"
There was no Mark cast to the sky this time...let the Potters come find him themselves, Much funnier that way.
"I killed a Potter, I killed a Potter!" she sang to herself as she twirled and dissapperated. It was only then she realized she wasn't sure which one it had been.