Asriel: Kris is the name of Susie and Ralsei's human friend.
Chara: Yeah. And Noelle said that Kris is your adoptive sibling, even though you've never met another human besides me...
Asriel: What could all of this mean? Could she still be Noelle? Everything else seems to line up, aside from not wanting to answer if she has any siblings...
Chara: There's only one crazy explanation for this...
Chara: It explains why Noelle is a teenager and why she knows you but not me. Events must have played out differently in her timeline that made it so you and I never meet. Kind of odd that Mom and Dad still end up adopting a different human though.
Asriel: We don't meet? That's kind of sad...
Chara: It's simply how the events played out in that timeline.
Asriel: Oh! Maybe we meet in a different way!
Chara: Psh, what are the chances of that?