One thought (which doesn't explaint he not eating food but stilla thought) maybe it's the nipple or the flow to the bottle? Have you or dh ever given her a bottle? I never gave ds a bottle but did have dh and my mom give ds a bottle to see that he would take it, we found he likes one type of nipple over another. But as always they prefer their mommas!
Lots of I know today has been a tough day! If you need anything just reach out, we are here for you!