B.D.
Sounds to me she is racting to the warm milk you give her before bed. I know you said she gets it again in the am but she also at some point then gets up and gets food in her. I would start to wean her from a night time bottle. I give my daughter water at night. If you still feel the need to give her mild before bed make it cold and see if that helps. She is old enough that she should not need a bottle or sippy cup before bed and may take some time to gt her out of the habit. It could be the warm milk that is causing reflux, where if you need to give her the milk try getting her to sleep elevated. They have mattres wedges tat work great for cribs. I had one with my daughter when she was 1-3 months old and had reflux.