Yunaka got summoned into Askr... under the identity of Edelgard? Clearly something has gone wrong somewhere, but where exactly?
It's tricky to say for certain, though as far as other anomalies go, there does seem to be a patch of slightly differently-colored fabric around the rear regions of Yunaka's bodysuit, not that the thief has noticed that herself yet... but there's no way the two things are related, better search elsewhere!