A provider I saw mentioned TER during our "meeting".  Do I need to let TER know to post a review?  Sorry, I'm new here and going through the newbie guide but can't find any information.

Go to the reviews page and click on 'submit a review' and agree to the rules.  Then write it.  It might help if you open a second TER window so you can copy her data onto your review, it beats the hell out of trying to remember it.

I usually type up the details sections in a WP page ahead of time.  After you are done, click submit the review and you are done.  

Swim

to develop a posting history so TER can recognize you as a legit hobbyist as compared to a friend of the provider who she asked to write a favorable review.

If she already has a profile / reviews on TER it may be easier to get your review posted.  First reviews of first time reviewees are suspect.  DO write the review.  If it not accepted right away, you can resubmit it up to 90 days.  (Click on the account manager on the top line.)
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Too bad there's no other way to verify that it's legit. I'm a regular with this girl and I don't think she has many clients, plus I don't want to see a bunch of different girls just to prove to TER that it's legit.