Now that the DC's universe has been rebooted, we can forget her pathetic loss to Wonder Girl (no offense to Wonder Girl, but Devastation should have made short work of her considering the trouble she gave WW).
I like the idea of an disturbed child who becomes an adult evil villain (kind of like an evil Capt. Marvel..lol), and can match the powers of Wonder Woman. However, I would totally sack the Titans origin, as the Chronus regurgitating cheap versions of the Olympians lacked a little luster when something I think could have done better. If we are going to go with the Titan's root...why not go even earlier, why not have:
Nyxx - The Primordial Goddess of the Night (equivalent to Gaea in many ways), ordered a female death spirit (Keres) to permanently possess a disturbed teenager, and empowered her with more skills by having the rest of her children award her with more power:
Nyxx - gives her incredible strength by drawing fear from the power of darkness; and regeneration from injury or at night or in the dark; she can also see in total darkness. Fighting in at night, where light and darkness sometimes combine, she can move as fast as the shadow of her opponent that moves faster than her; giving her equal speed to any combatant she encounters (but not necessarily skill) at night. During the daytime, however, her speed is just a few knots down WW's speed
Nemesis (goddess of retribution): trained her in the battle arts (gave her a bow that fires and eldritch bolt and can transform into any ancient weapon she chooses)
Hynpos (God of Sleep/Hypnosis) - gives Deva formidable mind-control powers
Eris (Goddess of Strife) - gives Deva the power to create discord everywhere by influencing the emotions of mortals.
Oizys (Goddess of Pain & Distress) - gives Deva the ability to tap into the pain and suffering of people, doubling up all her powers, making her extremely dangerous, especially with the power all the other primordial gods gave her as it works in synergy.
Apate (God or Goddess of Deceit) - Deva is immune to WW's lasso's truth powers, and this gives exceptional cunning and strategy in battle. Along with the powers Hypnos gives her, this combination of powers make her very formidable, and she knows whenever any of her forced subjects are released by the power of WW's lasso, or anyone else.
Nyx's plan is to create a false avatar for people to worship, thus expanding her range of power back to its glory days, but WW gets in the way.
TT