I had issues with DS being given snacks too soon before his BF's and that caused him to not really feed well for two day feeds - translated to me doing two NF's (which we haven't done in months!) that night and then having to wean him off it again over a few days by tranferring the calories back to the daytime. I'd really ensure her milk intake isn't dropping, as Shiv is right, milk has way more calories than any solids you'd be giving her.
Don't worry so much about what other people think about how much she eats... I have had the same people tell me on consecutive days that DS eats way too much solids and that he's too skinny. Even a child health nurse telling me in an interview before he was weighed, "oh he doesn't need to eat that much, he's only a baby you know" then once he was weighed, "you need to get more solids into him, preferably carbs and an extra BF as well if you can, he's not gaining enough weight".