30 years ago - Helena Bertinelli is born to Frank Bertinelli.
22 years ago - 8-year-old Helena first sees someone die in their home, suspects her father's criminal business.
16 years ago - 14-year-old Helena finds proof of her father's guilt, and begins gathering evidence against him. She focuses on her martial arts training with her bodyguard.
9 years ago - 21-year-old Helena tries to turn in her father after her mother's death, but his connections stop her. She survives a hit attempt against her thanks to the sacrifice of her bodyguard & goes underground, refocusing on her training & trying to take her father's business apart. She begins using the name The Huntress.
7 years ago - 23-year-old Helena meets Oliver Queen when they both attempted to take down the same business. He begins training her, & she begins incorporating her crossbow in her fighting style.
5 years ago - 25-year-old Helena sleeps with Oliver Queen, ending his relationship with Dinah Lance.
4 years ago - 26-year-old Helena meets Vic Sage, who helps her find focus in her mission against organized crime.
3 years ago - 27-year-old Helena returns to Gotham, using the Quake as cover to continue her work, incurring the ire of Batman, but eventually his begrudging permission. She first starts working with the Birds of Prey.
While the idea of Batman and Catwoman having a daughter is a neat one (and one we actually dabble with elsewhere), that story kept Helena Wayne limited to an alternate reality, which meant that every time she tried to interact with the central continuity characters she had to engage in some reality hopping nonsense, which is exactly what we're trying to avoid.
Thankfully, the persona of Helena Bertinelli was well crafted and had a great role to play in the DC universe. She was able to flourish in the Justice League, in the Birds of Prey, and in her own series. While this version of the character was wiped out with the reinstatement of the multiverse, it's clearly the correct one.
The CW Arrow series is pretty popular, but the fact that it chucks so much established continuity makes it hard to appreciate. Their take on the Huntress was mostly forgettable, but the idea that she was actually trained by Green Arrow is a clever one, and we adapted that into her timeline. Building her affair with Oliver into her story actually brings a lot of intrigue.
Lastly; she's had a variety of costumes, but a lot of them were pretty overtly sexual. While that is an element of her character, it really doesn't make sense. This latest costume, the one actually worn by the new 52 Helena Wayne, is the most sensible costume she's had.