13 month old probably not eating at Creche

Hi all, my 13 month old baby has started going to Creche full time now as I have joined back work. She doesn't eat much at home but I have been given empty lunch boxes from Creche saying she eats everything by herself I pack for her. Also, as soon as she comes home she seems very hungry. I have tried asking them a few times now that does she eat everything in different ways. I'm dying with mom guilt thinking she is probably not eating there. I try and feed her well before leaving her off to Creche and after she comes back home. Changing her Creche is not an option as waiting lists are very long. Please suggest some ways I can either accept this or change somethings so I can live in peace. Thanks a million