Quick story: While the Royals were trying to stop Morando in Trollmarket. He shot a laser at Kate and killing her completely and destroying her star.

The royals went back to Stuart's shop until Travis came in holding shards of a Star and everyone realised that it was the final bits of Kate's star so Travis used a super complicated spell to bring her back - nearly killing him in the process - and Kate did come back except she took a negative impact on the spell making her act like...

A drunk person.

(THIS MAKES SENSE IN MY 3BELOW BOOK)