How does one write the first review on a provider? Does he do the description, etc? Does he write it with the reviewee? Just curious. Thanks.

You write the review by yourself. Fill in all the blanks, make sure the juicy details are not a repeat of the general description. First reviews by newbies are sometimes not accepted by TER. This has been discussed on this board, and you can do a search. Remember it's TER's sandbox and they make the rules. You should get the VIP membership, and read reviews to get an idea of how to write them. You will develop your on style in writing reviews.

I can guarantee that it will not run until at least one of you get a review up first.

To that end, you ought to see more experienced providers with reviews and write reviews of them.  This will up your credibility.  In the meantime, she will hopefully see some clients who have already had several reviews published and one of theirs will go up.  This will establish her credibility.

Also, participation on the boards to increase your visability helps to get reviews up.

You should not consult her on the specifics of the review, of course.  The review should be your own honest appraisal of the session.

Read the review guidelines that come up when you click the "write review" button" carefully.

Best of luck with this.

If she has a web site, some of that information can be useful.  
First reviews of unreviewed providers are scrutinized very hard...  there were many suspicious First/First reviews at one time.  If the review is not approved it can be resubmitted or edited & resubmitted up to 90 days.  If your next review is on a reviewed lady, it might make it easier to get this one approved.  Also you board posting history improved your credibility.

Best Wishes,
skb