J.S.
I'd start giving her milk in a sippy cup. that way you can try weaning her from the bottle at the same time.
This might sound strange but I just added the milk to my son's (all three of them) diet in a sippy cup, and gradually cut the bottles down to where he only took one at night. Then switched out the formula for milk at night in the bottle, then eventually got rid of the night bottle and switched to giving him a sippy cup before bedtime with milk.