I know, I know. From Catwoman to Tirgra to the latest Cheetah, to the various catgirls of anime and manga, there are LOTS of feline females in comics....but there's more going on for Beastbeauty than just that. You'll see.
Even Vigilant would have difficulty seeing through the Norad-like Next Level headquarters---even x-rays would be absorbed by fifty feet of rock. If he upped his vision enough to detect neutrinoes, then human beings would be so transparent to be undetectable.
But thanks to numerous vents from the Next Level's Rainbow Mesa HQ, he can hear just fine.