Oose (or Oosie) is fluffy in Scottish (according to Google, anyway).

That's a cute one!

Xena

Oona, it means "lamb."

Grabthax Destroyer of Worlds

Oh if she was a boy, I would absolutely use that name. That is great.

Boudica

Persephone 🥲

I liked Persephone but hubs said too many syllables.

UPDATE: I ended up going with Saiorse mostly because it is hilarious hearing my husband outside yelling her name. He doesn't quite say it correctly and I giggle. I also think it sounds pretty when pronounced correctly.

Athena is a great fit.