If she was the genuine Chesty Morgan (glamour model from the 70s) I might be tempted to visit London. £100 for an hour isn't a great price or a great offer, I consider £120 or less to be the going rate for most areas. She doesn't see anyone under 28, which to me suggests she is much older than 41; in other words she has a son who is around late 20s and is embarrassed about seeing men who are her son's or son's friends ages - it's also a very specific age, not the usual 21, 25 or 30. Don't be surprised if she is 51.
Personally, I think she has a bitchy profile text and pictures that don't show off her body, and if I was in London I wouldn't consider her and besides I am late 20s. I think if you like her profile there is no reason to think the feedback is ungenuine. If you like her go for it.