[There's a flash of genuine anger at that being used against them. Yes, their failure. Yes, their stupidity. The fact that they went up against a catastrophic threat under the pretense that they alone would be enough to stop it.

Their expression sobers up, replaced by a steely gaze. Distantly, they're aware that Frisk's intentions were good, that this concern comes from a genuine place of stubborn loyalty, and a misguided desire to protect them. It still hurts.]

I could kill you with a light shove, partner. But fine. Since you've forgotten that you wouldn't have made it out of the ruins without me, let's see who survives longer as we thrash about in the flames.

[And with that, they release their hold on Frisk's grip, and promptly seem to disappear. The bond between them, however, will quickly allow Frisk to realize they teleported right into the burning home.]