[Wheatley folds his arms and curls in on himself a little, as if making himself as small as possible will help to extricate himself from the conversation, even though he knows there's no avoiding anything, at this point. He's deeply unsettled by what she's telling him, but isn't quite sure what to do about the feeling in the pit of his stomach, and the fact that she's turning this back around on him only makes it worse.]

I don't--I don't know what happened to her.

[It's not like he was able to check, given the fact that he'd been sent hurtling into space, but he did see the test subject pulled back through the portal. He's got no idea what GLaDOS did to her after that, or if she even made it back to the facility alive.

Any hope of making it through this conversation without admitting to additional deaths evaporates when she mentions the others. He thinks, for a moment, he might deny it, but all the things he said in his lair are fresh in his mind. He did taunt the test subject with the others he'd pulled out of stasis before her. There's no real getting around that.]

The others, were--accidents. You know how it goes, you pull them out of stasis, try to--to get them to the portal device, but they're all disoriented from cryosleep so then they slip on something and they bash their little heads in, or fall into some water, or the turrets get them. I wasn't--I never wanted to kill them!

[Wheatley is practically begging, at this point. He doubts that Jill is going to be particularly sympathetic, but the last thing he wants is for anyone else to find out.]