@Nancy268
As the website says reviews are posted either when both sides have completed one or if only one side has left a review, then it is published at the end of 14 days.
So if you write her one and she doesn't or vice-versa, that will be public. A trick is: wait to see if she writes you one first, prepare one from your side, and then wait till the end to write it. The tricky thing though, is knowing when exactly and according to which time zone ABB cuts off the 14 days, so don't wait till the last minutes according to your calculation!
Please for the sake of other hosts don't let her get off the hook (although she'll probably just close her account and open a new one to book with another unsuspecting host).
Tell the truth, but keep it unemotional, professional, and factual. You can list the house rule(s) she broke without going into the minutia. That she felt entitled to have and entertain x extra guests in your home without prior explicit permission (the wording obviously still needs massaging) and that you would not host her again. Give her a thumbs down so she can't Instant Book. And at the end of the review there's always also a box in which you can leave a more detailled report for Airbnb in case of later dispute from her side.
If she leaves you a review, you can always react to that. Here too, keep it professional, unemotional, factual, and do not rant or blast and don't go into minutia. A host response says more over the host. Write it as if you are writing it for the eyes of potential guests, not to scare them off.
You won't be able to edit your response once posted, so write, edit, edit, edit off-line, and if need be as long as you have time to do so (14 days I think, but check what Airbnb says under the review)
Here's some good tips:
http://www.vacationrentalmarketingblog.com/negative-reviews/
This CC forum is also chock-full of tips and advice regarding reviews and responses.