[Look- Kaiba's people skills have always needed work, there's no argument there. In the void he's been without his usual buffer, ie. his more congenial brother Mokuba. Throwing around his position or his dueling prowess has always worked before, since those that didn't fear one attribute at least respected the other but neither really works here. He was legitimately thrown off by how swiftly this fell apart.]

You're the last person I'd want to hear this from.

[Since- her personality as they already covered is equally or more offputting]

You know what you can do with your three step program..? [Implying something unpleasant but not voicing it]

I don't want anything. Not from the people here, and I've never needed nor wanted friends.

[Self-dependence was far superior than anything else.]

I shouldn't have bothered to participate in the first place.