[@Blueflame]
Chara sits up and closes her eyes trying to remember how they did come back because they honestly didn't know. "Ummm good question Sans... I actually don't know... I was just here one day following Frisk around but of course I stayed silent and Frisk didn't notice me. But I think it was just maybe 3 months ago did I actually start talking and showing physically slightly... I think it has to do with her Love for living with the monster of the surface and stuff," They tried to explain even though most of it came out has a mumble but could still be heard by Sans.