M.V.
I agree that this is normal. Is she taking a bottle when she wakes in the night? You may just have to adjust how much you feed her before you put her down for the night. The doctor had me start my daughter on cereal at about 4 months. As long as I fed it to her by the spoon and not the bottle. I used to feed her some cereal just before bedtime and then her bottle. She then slept all night.