The one behind everything
Some families were aware that Fex had gone missing, however, they didn't know he was attacked or about the memory loss, and they definitely didn't know that something happened to Kazz. Her words were even a shock to them all.
Other than the thirteenth leader, Lee, this was the first time they had heard that Kazz had been attacked. Attacking one's vampire knight was similar to declaring war on that family, unless they had a good reason for doing so, or had been ordered to.
From the words she spoke, Quinn had gathered that it seemed like somehow, Kazz was able to regain her memories and this was the moment Bryce was waiting for.
'But how was he able to get Kazz's memories back?' Quinn wondered. By now Quinn was pretty sure Cindy was behind everything due to what he had learnt from Alex. With her ability she was able to return one's mind back to a certain point in time, similar to what she had done with Cia.