Reload her at Nightwing's age, with her Silver Age origin, ..but, with a twist.
A teenaged Diana and the Amazons rescue an infant girl named 'Donna' from a fire, aboard a time-lost sea ship (the Troy) from the 1600s, ..maybe, headed for or from America! Diana loves little Donna on sight, and Hippolyta raises Donna as an Amazon princess, with Diana as her big sister.
As both grow up with a feeling of being outsiders among the Amazons, Diana and Donna have a special bond, and they spend the last years of Diana's Amazon training, together - Donna gaining Amazon powers through training. Somehow, through some supernaturally catastrophic event, young Donna is lost and awakens in modern day Man's World, where she joins the original Teen Titans and grows up with Nightwing, Arsenal and Kid Flash.
Bringing Donna from the historical past eliminates the need for a human origin or birth-parents, because they're long dead anyway. She was a baby the Amazons found on a burning ship, who doesn't remember her birth-parents, and that is the end of that - nice and clean.
It should also be established that Donna has laid down her Wonder Girl mantle and is, somewhere, living as a mortal, American woman. Why, we don't yet know.
No Titans of Myth. No Dark Angel. No Staceys and Hinckleys!
[Excerpt from a previous post.]