You have some problems. First, you will have to convince the DA you made a false report rather than having a change of mind. Second, if you do convince the DA you lied you could be arrested for making a false report. I suggest you get yourself a criminal defense lawyer.
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Without knowing what the case is about, its hard to answer all your questions. In the long run, if you are willing to go to prison for filling a false statement, the innocent victim will be released. The question which the DA must answer, before he will drop charges and release the man, concern whether you are being coerced to refute your prior statements.
You cannot have your cake and eat it. If your report was true and you wish to recant, then the DA will not accept your recantation and take his chances with an unwilling victim. If you convince him you lied, you are admitting that you committed a misdemeanor and he might very well prosecute you...open and shut and is a deterrent to others to lie about such charges against boyfriends/girlfriends using the legal system as their "bully."
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