Oh what a beauty. I'd love to be able to make something like that. If you can't bring yourself to work on her, give her to me. You could drop her off & stop in for lunch with me on the way to the forum! (I'm in Columbia, folks, and if anyone heading to or from the forum wants a lunch break or coffee break here pm me.)

If you're really concerned about authenticity & historical or monetary value, show her to an appraiser before proceeding. But I really think it's OK to finish her with the tools you have and love her.