My 7 yr old dd reacts very strongly to things, she has high anxiety and she still has tantrums. They can be extreme. For example she has just had a meltdown for 1.5 hours (crying, screaming and kicking) because I explained Daddy said no to her eating in our bed because she makes crumbs. She was devastated that I didn't believe that she doesn't make crumbs (she does make crumbs). My dad thinks that she is bang out of order (fair enough) but can't see that she is 7, and hasn't learnt how to deal with her big emotions yet. I'm worried that there's maybe more to it and the tantrums, plus her anxiety may not be normal for her age. My dad thinks I should just stop her tantruming (no idea how) and that I'm letting her older sister down who is always upset by her tantrums. AIBU to 'let' her get away with this behaviour?