Our 8 year old daughter (diagnosed with Asd and Adhd) is obsessively controlling of her sister. If her sister does the smallest thing that she deems incorrect (holding her bag incorrectly, not sitting in the car correctly, using a hair band to tie some cards together, singing, not flushing the loo) her reactions are extreme. She has huge meltdowns, us often aggressive and intimidating. Her sister is suffering so much because of this. So are the rest of us. I try in co-regulate with our daughter but it is like she has to see the meltdown through to the end where she drives herself and everyone else to tears. She isn't like it with anyone else. It is specifically her sister who she has a problem with.
Any advice would be really helpful.
