My dc had a friend over for the day, mum told me friend is vegan so I catered accordingly. When friend was round they told me they’re not actually vegan, but parents insist on sticking to a vegan diet at home, school or out with them. Asked for a cheese sandwich and begged me not to tell their mum. I felt really uncomfortable and just stuck with the vegan food I’d got in as mum requested. Child is 12 and in secondary if that makes a difference. I don’t even really know what my Aibu is. Are 12 year olds old enough to decide what they eat for themselves or at that age should they still be following parents rules?