Meeting yourself is the sort of situation nobody's ever quite prepared for, even when you're someone who really ought to be, such as, say, a ten year old with unruly time travel abilities. The other Chara even says they think they'd go so far as to snap if they'd met face to face with no warning- which this Chara thinks relies on the assumption that they aren't already half-crazed as is.

"I don't know if we would have shut down," Chara suggests. "We might have tried to kill one another instead."

A thoughtful noise. Frisk is one of the few people they've met so far who hasn't tried to kill them, and Chara knows how dangerous they, themselves, can be... "Or is that still on the table?"