Hi there
Have you started her on solids. I know when I did with DS I found that he wouldnt wake for that middle of the night feed. He has farex for breakfast, lunch yog, and dinner vegies and he seem too sleep through once he was having his solids.

They say most of the time babies wont sleep through untill on 3 feeds of solids a day. Some bubs do but mine didnt.

Good luck