If she is English then it might be too good to be true as it is not nomal at this price ...
Otherwise I can not find any reason why it is too good to be true.
The area is not central. Do seach on AW you could find hotter, young EE prossie at a lower price about £50 for half hour ...
Looking into her location Hounlow, where there are a lot of Romanians, I doubt she is English ....