To be honnest with you hun, I would not give in. Cats are notouriously fussy eaters and I think most of the time they are just seeing how far they can push you.

I know you have already tried mixing the foods together, but if you try putting some of the kitten food on top of the mixture aswell. This will make her think it is just her kitten food and she will hopefully eat the mixed food underneath by accident... (its all about being cunning... he he).

An alternative to this, is to try mixing it with the dry food she eats instead, once again after you have mixed the food together, add a bit more dry on top so hopefully you kitten wont realise what is underneath.

Try not to give in, when I have changed foods in the past, if I find my cats to be fussy, I let them go hungry. This always works, they will never miss more than one meal.

Hopefully when you get her to eat it she will love it! Good LucK!