She had looked at a number of things on the board with Leon, so the impatience was not entirely surprising. Her other recent interaction with him had been fairly calm, but she had sensed a bit of agitation bubbling underneath. It's as though he had Andrei bubbling under the surface of his Hydra house calm. "You are a vampire," Boo reminded him, "You have many lifetimes to master this."
She glided over to him gracefully as though she were actually floating towards him. "It took me my entire childhood to fully gain control of this form," she explained, "You have had this capability for less than a year my dear." She bent down to look him in his agitated eyes, "You are capable of patience are you not?"