[It's not a particularly convincing save, but Maria recognises that she's at least making the attempt. Though she doesn't start smiling again just yet, she at least lets up on the frowning.]

It's not a child's treehouse either, if that's what you're thinking. The tree itself is extremely big, so there's full rooms on the boughs and things like the kitchen and library are in bigger ones curved around the tree trunk. It's something I'd be surprised if it was possible to build and maintain somewhere outside of the Heavens.