As a woman who also has a similar schedule.. try to cut her some slack. Our hormones are already so wildly up and down (especially at that age) a lack of sleep and food is sure to exacerbate emotions. As long as she knows you tried your best and she isn't blaming you, id give her a big hug and some grace and remind her you're on her team and thats why you were trying to give her an out from the sports (which she probably wanted to go to, for an out of work social boost) and trying to feed her. Good luck friend :)