Help for NoelleKnight

So this is my first post in this community, I've found it a while ago and, while Dess is still at the moment my N1, it has helped me develop now points of view, mainly with Asriel and, reason for this post, Noelle.

Atm Noelle is my number 2 pick, but I have a question, during chapter 4, while Noelle and Susie are in the living room, Kris gets a call, we know it can't be Carol cause it's different from the weird route ending one, so many theorize that it is the knight, which just can't work with Noelle.

So, how do NoelleKnighters solve this problem?