I ended up taking Millonia to my old hut. I would like to bring her to her room but I don't think it is proper to enter her room and stay there without her permission. Not that I care but, as a friend, that is the least consideration I should show her. Hence, my hut is where I go.
It remains the way I left it. Everything is still in its original place and there is nothing added to the room. I lay Millonia on the bed and let her take her sleep. I go to the corner of the room to take a look at the Beasts Repelling Rune and find it inactive.
The Celestine has run out, making me wonder if it is even required in the first place. The condition of my hut has proven that even without the Rune active, Wild Beasts still don't come to attack it.