Once done with the Card Master's wishes she got her world back, her world stolen by his games and the Princess with whom she shared a name. No more loops, no more looking at her family knowing what's to come.
With her children grown up, each taking on lives of their own as monster hunters, her pleasant life of farms and vineyards and orchards seems duller by the day. That is, of course, until the war, across all of Equestria's kingdoms, breaks out.
Driven out of the orchard she earned to live in by the High Mountain Kingdom, there is nothing but the road. War and chaos and corpses let monsters thrive, and where there are monsters, there will always be hunters.
Whatever is to come, Fiora de Battaille will stand for the life she fought to get back.
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Author's note:
This story takes place after the Card Master Trilogy, following the continued life of one of the characters in the trilogy. However, the time and story is specifically designed to be independent from the original trilogy.
The only details of significance are this: Fiora de Battaille is an "alternate" version of canonical Twilight Sparkle, who, in the events of the Card Master Trilogy, was raised from young as a monster hunter. Non-earth ponies are infertile mutants, with the exception of Fiora, who has started the only line of fertile mutants with a pony as the father, who has long since been deceased.