Hi chevauchee, welcome to the forum and welcome to 3FC
Maybe you could go to a library and check out some cookbooks before buying.
The med diet seems to take a bit more cooking and commitment, but it doesn't have to. Maybe the Sonoma diet cookbook would help her, because the approach is a little more flexible. The first few weeks sound restrictive, but if she's not looking to lose weight anyway, maybe she should get to the "maintenance" phase.
Also, I don't own these but here are some books for sale online ...
http://cgi.ebay.com/ws/eBayISAPI.dll...=263602_304632
http://www.amazon.com/Simple-Mediter...ews/0563493275