Vlad would likely feel her before she saw her. It wasn't a counterattack, the posturing was at an end. Its possible he even simply saw her move, eyes not hampered by the limitations of humanity might be able to spot the petite vampire as she sidesteps the pillar of flame, stopping at his side with her arms crossed.

"Not unimpressive. I could feel it, that would not have been something to ignore had it actually burned me. I assume you were holding back the majority of your power? Regardless, I do not feel as if I would be belittling myself to associate with you. Besides, my Sakuya has already done so, I trust her judgement as much as my own."