I have two suggestions:
1. try Royal Canin, I have yet to meet a dog that doesn't like it, and it's a fantastic food!
2. Whenever you give her something new make a huge deal out of it, like it's the yummiest reat ever, and then give her each piece as if it were a treat. This is how I got Tucker to LOVE his heartgard. Anyway, make her do whatever you do (like sit, lay down, etc) before giving it to her. if she doesn't know commands yet no worries, just make a big deal of it. I always say " wow, tucky, LOOK! aawwww, this is amazing, you want it??? You want it??? and he goes nuts! I've tried equally delicius things without all the fuss and they aren't good enough for him he thinks. Try it, it just might work for you