Mochi came in Cha-san’s room

Mochi is very skittish. However she is a big eater and is not afraid of Cha-san as far as getting food.
She comes in the Cha-san’ s room so she can get treats from mama-san.
This morning, she came in the room to look for Cha-san’s food and jumped up to the window.
Her cat tree was taken away from the office (Cha-san’s room) but Mochi might come back to this brightest warmest room in the morning if mama-san makes the place for Mochi to stay.?