Gretl, I think, in a cubby hole.
Gretl and Kurt
Well Indigo was NOT happy about that! It might fit seven small kittens, but there's no way it would accommodate a great big mama too! She tried to drag a kitten out, back to the nest, but it waddled straight back in the cubby, protesting indignantly. Eventually she gave up, and decided to stand guard another way.
She's such a good mama!