Awesome xD
What can I say about mah-mah-mah-my Shirona
little japanese name/pop rock pun for you, there.
Anyway, canonically, Cynthia is greatly interested in myths and legends, has family in Celestic Town and has helped Prof. Rowan with the pokédex and it's basically implied that she had a similar kind of journey to the DPPt protaganist, minus Team Galactic of course.
Oh gawd, I was looking on Bulbapedia to find out the above canon stuff and I found these quotes from B/W
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"Hmm. This is difficult. I was greedy and bought a lot of swimsuits, but now I can't pick which one to wear."
"Here's my problem. I have a white swimsuit and a black swimsuit...Which one would look better on me?"
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That's just blatant ship baiting xD
Okay, just reading about her makes me love her even more, her English name refers to the Greek Goddess Artemis, which is just win.
Anyway, enough rambling.
In Skogsra (I can't be bothered finding the accent for the a
) I have it that Cynthia lived for an amount of time in Eterna City, which is an old city, has references to the old myths and is at the base of Mt. Coronet. Perhaps between there and Celestic Town are where she developed her interest in myths and legends. I also have it that she spent a fair amount of time journeying with Gardenia and that the two are fairly close friends in the fic they explore the Old Chateau which both cements Gardenia's canon fear of the place and Cynthia's canon liking for myths etc.