Responses
I know it's common not to think too much about the clothings, but if you think about were the setting or where she came from, clothes are practically luxury for poor commoner. And of course she ate, probably a nibble or two from the excess ingredients that are not worthy to process. It's sad, but that's how it is. She might not overthink it at all.

I know it's just fiction and common in anime or smth but really, she just isekai-ed and didn't have any clothes for change. Also did she eat while going through trouble to prepare for all the food tho? The preparation seem to took quite some time :(