If she were mine, her name would be Penny Dreadful rather than Pretty Penny, but to each his own XD
Honestly I don't really understand why a ton of people give food names to their rabbits. Considering that humans eat rabbits in most countries, I've always found that a bit disturbing.
Thalia? It's a Muse, also called The Joyful and The Flourishing.
Finding a name is always hard. I read whole lists of suggestions for my youngest rabbit and nothing stuck, but when I was talking with a friend I was like 'Oh, I don't know, I'll probably end up naming him something literary like Tybalt" and then 'Yeah, that's it! His name is Tybalt!' XD