I'm only expressing my opinion based on what information I have.
I believe we all should be respectful of one another regardless. If the lady has clearly stated on her website or prior to your meeting her that she has a no review policy then you should respect her request...... but.... and there are a lot of buts to it.
If her pictures are a fair representation and she provides a service as promised or advertised it should most definitely be respected.
If she is not fairly representing herself and not providing a service as promised then she hasn't respected her part of the meeting. This could take forever to explain but examples of not providing services as promised could be bait and switching or her TER or other advertising site profiles say she offers services in which she then tells you when you meet are things she doesn't do. I believe that since she doesn't have reviews (only assuming) that she should make sure her information is on point because there are no reviews to help create clarity (although reviews don't always guarantee that either).
It most definitely in my opinion wouldn't be fair for her to tell you this once you have met or if she does have other reviews that seem to just be helping her rating.
Doesn't sound like we know the reason as to why she doesn't want to be reviewed but she may have a very valid reason in requesting you not to. I wouldn't waste my time trying to figure that part out or to argue it or justify why you have the right to still do it, just respect and either accept it or move on kindly.
If you are interested in her and want to take the dive then you should respect her wishes so long as she does the same. If you don't like the idea of it and feel that you may want to write a review regardless then there's no drought in options out there and you should find someone more suitable.
I wanted to keep this respectful and if you choose to see her I wish you the best and hope it works out! She could be amazing!
Stay Safe!
XOXO
Bella