The fight continued on between the Bloodsucker and the king tier beast. At first, when the two of them fought it looked fairly even between them. Neither one of them was getting significantly hurt from the other. This was good for Fex.
When a vampire turned into a Bloodsucker, their health, or in Quinn's case Hp was halved. Their wounds would also no longer heal. It was a starved state for vampires. A mode that allowed them to grow stronger in order to consume blood. But also acted as a double edged sword.
However, slowly one of them was starting to get an edge and it looked like it was the Bloodsucker. Quinn was starting to notice that the power and the speed of the king tier beast was finally starting to slow down.
It had been in combat with multiple opponents and multiple times, so it made sense to Quinn but this wasn't the reason why. The beast had an inhuman amount of stamina and could continue to fight the students for hours on end.