She can ask the prosecutor to drop the charges, and the prosecutor may choose to do so--and often will--but is not required to. That is because in a criminal case, the victim is not the party bringing the charges or legal action: the state is, and it is doing so to enforce its laws. Therefore, while the prosecutor may be sympathetic to the victim's request, since the state, not the victim, brings the action, the prosecutor is not obligated to follow her request and dismiss or drop the charnges.