Speaking strictly from a provider perspective, I think Rubratings and Tryst are the best options. I am assuming she’s a bit higher end - so those two are her best option.  

Another idea if she’s up for it, use social media. Many of these girls are using Twitter, instagram and Snapchat to create a relationship with their audience. This seems to drive a lot of traffic and help them boost their rates a bit.

When she returns share the link.