Disclaimer: All but the plot to this particular story rightfully belongs to Rumiko Takahashi.
Words: 292
Estrogen
Despite the comicality, she found herself squirming under his expectant gaze. Unfortunately, this would not be a conversation she could escape. With a sigh, she conceded. "Rin-chan's at the age where human girls start having... monthly cycles where they-" She uncomfortably motioned a small circle around her upper lap with her hand, straining to think of a more refined way to explain it.
Sesshoumaru eyed her charades. He nearly snorted before adding, "Bleed."
Color rushed to her face and she nodded, "Yeah. It's not dangerous. I mean, we get tired and hungry, and there are mood swings, but it's a step towards fertility!" She forced a smile his way.
Sesshoumaru didn't even blink.
Clearing her throat, she continued, "She'll need certain materials; extra cloths, if you have them. And she'll have to keep herself clean. Oh, she'll probably get cramps. Those are the worst-"
"And the essence?"
"Er... essence?" Then it clicked. "Ohh," she exclaimed. "Like, a smell?"
He nodded.
"Well," she began thoughtfully. "My nose isn't as strong as yours, but I'm sure we do smell different when..." She fidgeted with the twig in her hands, peeling back bark with her thumbnail, "...it happens. Think of it as just a rush of estrogen!"
"I am unacquainted with the term."
Kagome paused. "She's growing up and her body's changing into a young woman's. The smell's just a side-effect." She shrugged.
He mulled over her words. "Rin will not be seeking a mate this spring."
She lifted a finger in the air and grinned. "Exactly! Rin-chan's still a little girl. She thankfully doesn't have the raging hormones of a teenager yet."
He cocked a brow at the unfamiliarity of her words. However, her phrasing made it sound imminent. "Hn. Explain."