Thank you so much feel like I have been hitting one dead end after another. I am not sure this is her condition but with all the references cited I feel like I have options. What a help you have been! By the way, are you a Latter-Day-Saint? Can't thank you enough!
Mamacheryl
I found one study on this, conducted by UC Davis (the author's contact information in in the article): Might be a good place to start.
http://mend.endojournals.org/cgi/rapidpdf/me.2005-0014v1.pdf