"Your ability isn't bad, big chested beauty. Did we strike a nerve?"
Sael's ability wasn't one that was publicly known. It was often difficult to tell what a person's ability was unless it was far too outside the norm. Something like the combination of techniques Sael had just used were most definitely too out there to not be an ability.
Her eye technique, especially, made Aphestus quite serious despite the grin on his face. She had only landed two of those tattoos on him, but just those two was enough to cut his Force circulation down by 20%. Whether it was his Force control or output, it all took a hit.
Beyond that, Aphestus' instincts also told him that landing these tattoos also allowed Saels to see through his Force circulation as well, as though she had a connection to them. While her tattoos were hindering his Force circulation, she could sense this flow and predict his next action based on this.