I would not worry about getting girls on your website until your website is fully SEO optimized and rankings in Google search. Once your website is ranking in Google and getting closer to page one your website will or should start to attract some attention of girls in the area that way they can get in contact with you and you can feature them on your website. A lot of the time girls do not want to be featured on our website which is still in the starting stages because they know they are not likely to get any business.
If you are keen to get girls listed on your website I would try the classified and escort directory websites in the area.
Hope this helped!