Faora has no way of even damaging Hela. Zero chance for her to win.
That being said, Faora is very skilled, fast, and powerful with speed being the only physical asset she has to keep her alive. Eventually Hela will tag her and its game over from there. She won't get one shifted IMO but each blow Hela lands is going to whittle her down.
Hela 10/10 as I see no way for Faora to do any lasting damage.
An adapted Faora would have been badass IMO and would have absolutely wrecked both Clark and Zod at the same time.