What time do you normally feed her lunch and dinner? Those sound like more lunch and dinner times to me. Did you provide directions on what you wanted her to be fed and at what times?
Doesn't sound super off to me. My kids ask for 82927 snacks a day so they'd never go 5 hours without eating 😅. But if she didn't say she was hungry and you guys didn't previously discuss them feeding her dinner then it's probably not a big deal
Doesn’t seem like a big deal. Did you communicate with them regarding her eating habits? Did she let them know she was hungry? Maybe send her with snacks next time so aren’t upset next time.
Did she complain of hunger?