User blog comment:ScarletWhisper/No Red Hood In Season 2/@comment-124.197.12.148-20121111214409/@comment-34954086-20121112093043

Two reasons I can think of...
 * Her introduction requires the introduction of ze Diabolical Profesorre Pyg! and his Dollotrons (since she sorta IS one). And that only brings on the reality the Beware of the Batman is coming.
 * This one is actually one of the reasons I like it, The way that he absolutely takes advantage of her, her situation, and clearly doesn't give a damn about her consciousness over her appearance, really emphasizes that Jason is a Villain, not the anti-hero they worship. It's a darker facet of his character, for me, it's a good contrast for how far gone he is.

At least, that's my take on it.