Candi, who already had a sex drive that rivaled that of Laxana, was starting to feel the full effects of the second bottle of milk that was purely Lilith's breast milk uncut with fruit milk and being pushed into Bel territory.
While Bel wasn't quite as demanding in that department as Krynienne or Allison, if she didn't get some daily, she got irritable.
By saying that she felt really hot down there while asking Zeph if he could make her feel better, despite their current engagement in the activity that should make her feel more comfortable, she was hinting at the need for more focused attention.
She was beyond wanting sex and was reaching the point where she needed it. Not in the same way that Krynienne did where sexual energy and male bodily fluids were necessary for her survival, but in the most primal of ways that could easily drive her crazy if she didn't get enough.