Maya doesn't hold a candle to Kuuga's Sakurako or basically any Agito girl in terms of accomplishing... well, anything. In fact, compared to Sakurako, Maya's kind of a superfluous idiot.
I also don't see how Maya's even on par with the more passive female roles that Ryuki and Faiz introduced. Maya only ever does anything in Dragon Knight when there's time to kill or she's needed as a plot device.
KRDK might do ladies in Rider proud with Siren, but Maya's nothing to write home about. She's a watered-down Lois Lane at best.