Don was still holding the fireball with one hand,
"How can you?"
Aster never saw someone stop a fireball created by Rosaline like this, even though it was a quick spell, the spell was created by Sears and it had the power to kill a great master with the right timing and execution.
"Who do you think you are? Do you think I'll explain my actions to you?"
Rosaline raised her voice and asked Don, ignoring what he had just said.
"If you think a parlor trick and that grandmaster girl could save you, think again, I can kill you both with a single spell"
She was releasing her mid-level grandmaster magical fluctuations to frighten him.
The only thing saving these arrogant girls was their background but if they really tried to kill him or any one of his men, he would rather kill them on the spot and face the consequences later because if they wanted to kill him, it would be a kill or killed by scenario.