Stone Circle Sister, you are going to be an aunt.

This is literally all I thought of: https://www.youtube.com/watch?v=EShUeudtaFg
Also, congratulations! I just realized that Nanook doesn't actually know how babies are made lol

Nanook drew back her head and felt her brows raise. Desna had news? And to share with her first. At this, something wormed in her heart, a warmth, and Nanook fell back on her haunches and crooked her head with the same curiosity she had probed her sister with. Desna took an equal sit, and this only brought further suspicion that perhaps her sister hadn't quite outgrown the habit of sneaking food...

And then the bomb dropped.

She blinked. Pregnant. Her sister? Logically it made sense. "Ma said you'd need be grown to have them." She mused quietly. Nanook hadn't quite understood at the time, but she had grown since that day, and had come to understand, and so had Desna, apparently, on levels much more personal than she. But pregnancy, outside of a concept, was a new thing to her, and Nanook found herself on her paws again and inching closer to her sister, wanting to examine the strange phenomena that had overtaken her now. The bulging sides - that wasn't food. Those were little wolves, and Nanook squinted, trying to imagine what inside would look like. "Weird." she murmured, and turned her head the other way, "So how did you do it?" Nanook knew a lot about the stars, the sky, the weather, the ground, but in all the chaos of her childhood, this talk had seemed somehow inconsequential to her. She'd had plenty more important things to think about, after all.