@~Marigold~ thinking about this more don't feel sad or frustrated about your DD and whether or not she eats. Worse case scenario she won't eat the food and has toast (which is what she'd have if she was home?). Best case scenario she eats or at least tries the food. And what if she likes it!???
She'll be fine. She's definitely not the first fussy eater the carers will have seen. And the carers at DD's centre thankfully never made me feel bad about it. They'd seen it all.