I don't know much about Nutro....only that it's a 3/4 star food out of 5 stars...
I had similiar problems with my babies when they were little...very picky.
I finally was able to get free samples of premium foods from our Feed and Grain stores...and some specialty pet shops also give free samples...you might start there...see if there is any that she's interested in..
My girls like Canadai, Evo, and now they are on Natural balance..I"ve also recently tried The Great life..which they did like too.
Some have suggested sprinkling parmesan cheese on the dry food..to get them to eat it..I tried it..but it didn't work for my picky eaters...so I just kept trying to find a food they liked.
Good luck...it can be frustrating trying to make a finicky eater happy!
Here's a rating guide to help you choose quality food:
Dog Food Reviews | Dog Food Ratings