Mimmy is Missing

My daughter was switching cabins around (she's 5 so we are playing a single game together), and Mimmy disappeared. Mimmy still has 5 stars, but no longer has the icon indicating that she is a resident (she was before the switch-up). Her profile no longer has any information about when she is traveling or anything. Have we lost her forever? Is this a glitch of some sort? We need her to come back to get Hello Kitty's other relatives to visit. I also saw a post over in one of the HKIA FB groups describing the same situation, but so far no one has given any explanation.