Many people have food preferences, but some also deal with dietary restrictions due to allergies or other health conditions. Needless to say, these restrictions usually significantly limit the variety of meals an individual might enjoy.
One of these people is the OP’s daughter, who is both dairy and gluten intolerant. Recently, her school switched to serving only halal meat, which her mom doesn’t allow her to eat. Now, the girl’s options are so limited that she basically has only one meal there. So, her mom turned to the internet to ask whether it was unreasonable for her to want non-halal meat options at school.
More info: Mumsnet