No, the AG is pressing charges, ostensibly on her behalf, because everyone thinks she was in denial about the abuse. Alternatively, even if everyone agrees she consented, consent isn't a legally recognized defense to all forms of battery and you also have to consider sodomy laws: in the hands of a conservative judge/jury, what you were doing actually was illegal, even though you were consenting adults and nobody got (permanently) hurt, which is the standard most "reasonable" people go by nowadays.

IANAL and the little I know about the intersection of kinky sex and law comes from a single presentation I attended years ago during college. Please correct me if I'm wrong, but I'm fairly certain I have the broad strokes drawn correctly.

IANAL, but in some states there are certain legal mechanisms that prevent domestic violence victims to back off and drop their charges (as a "safeguard" against intimidation leading to dropped charges).

I wouldn't be surprised if some states had laws that more or less forced the potential victim to go through the trial even if she intends on testifying in your favor. I dunno. Just sayin'.

The state presses criminal charges, not the "victim".

The state presses charges, not the "victim". For an example, see the recent proceedings around Sheriff Ross Mirkarimi in San Francisco.