Huge, slow but heavy steps can be heard through the Labs, it was the "New Queen"

She seemed disturbed, warm and... "In Heat", so she was checking on you from a distance. She was looking for her male to breed with, her king to have children with, who unfortunately or maybe luckily was you.

She hissed at you, since the only way to talk (They skipped Duolingo classes j.k.), she was clearly interested in you from her slow tail wagging