Mango, papaya and starfruit are the least allergenic fruits, maybe you could try those? Avocado and banana are both recommended for very young babies. if you are worried about constipation, melons and really black (ripe) bananas work well.
You may want to look at different reasons for her refusing milk: allergies to foods in your diet (my babies were allergic to tomatoes, milk, citrus, yeast, and onions) or dysphagia for example.