Yeah, I completed the game by now and I talked to Egliette in the bonus room where she explains that Fleta has many inanimate copies of her to carry because she doesn't want to be carried all the time but I think this is a lazy excuse because there are times when we literally see Egliette jump from Fleta's arms and we still see her in her arms in her picture and there are also times when the player character parts with her pocket mirror like when she hands it to someone for a moment or put it on the floor to solve a riddle but we still see it in her hand in her picture, I think this is just laziness because the characters use one picture each and they didn't bother to make changes to match the situations.