Once it's launched, contact the same blogs that she has and say look we've already started, you don't need to wait.

Force her to launch earlier than she wants to. The other thing I'd say is some 37Signals advice. Hold back some completed functionality at the time of launch. Release it in a week or twos time. Thus demonstrating that not only did you launch but you are constantly going to be ahead of her.

Finally, please use the anger judiciously. Instead of running her over, crush her spirit.