A good photographer is worth far more than 1000 bucks a day - even for an amateur site, but I think the person shooting her current images isn't worth 100 bucks a month.
Those simple semi-nude-backdrop photos are boring and not inviting at all. They won't sell imho. I am certain she would do better shooting self pics with a digi cam in front of a bathroom mirror (hehehe, I am mean - I know, but people like and expect those kind of things from amateurs).
A lot of good photographers will be willing to make a test shoot for portfolio images for free and accept a percentage of sales. There are various resources for models and photographers online like
http://www.modelmayhem.com/ Once she has a small amount of good content, she can think about site design imho.