If the guilty plea is tossed out, then the state would have is to bring him to trial for the charges--since the victim does not want the case to continue, there wouldn't really be much to build a case on, though it may be possible for them to introduce her testimony from the earlier trial. Someone would have to read the testimony to the jury, however, and, having been involved in lawsuits where that happens, I can tell you that juries are not much impressed with anything that anyone reads to them that is much more than a paragraph long.