*a few hours later*

Toriel: Mystery! MYSTERY! *sigh* Where could that child be? It's dinner time, and I haven't seen her since I made my choice. Wait... we left Asriel and Mystery alone. ASRIEL!

Asriel: What, Mom?

Toriel: Do you know where Mystery is?

Asriel: *faking being upset* No... I wish I did. I wish she'd come back...

Toriel: It's okay, Asriel. We'll find her... I promise.

Asriel: *fake crying* *wipes tears* Okay... *goes to his room* *grins and stops crying* She's gone. Hopefully, for good.