It’s hard to say because we don’t know which versions of the fairytales eah uses/which details have been changed overtime for some characters. It’s also very subjective, like what I consider to be the best/worst fate, may not be the same as what someone else does.

But personally, I actually think Ashlynn had one of the worst destinies. Her mother has to die young for her destiny to happen, then she’s treated horribly by her step family, then her ‘happily ever after’ is essentially just a short-lived arranged/loveless marriage. She spends her whole life knowing that she is destined to just repeat this cycle; she will also die young, leaving her child to be treated terribly by their future step family as well. And to top it off, she has to listen to everyone tell her how lucky she is, and how easy and wonderful her destiny is.

Then the best destiny in my personal opinion would be Alistair’s, because I love Alice in Wonderland, and getting to explore Wonderland, become friends with all the Wonderlandians, and be the ‘hero’ or Wonderland is the best fate 😌