So dd (3 with asd) is addicted to playing with her brother. If he's uninterested in doing what she wants to do it results in incessant whining and/or a tantrum. Im guessing explaining he is a person with separate feelings would be an exercise in futility and I don't want to discourage her from inviting him to play. Any ways to help with this issue?
Re: Sibling advice
Her language has always been at a 12 month delay. I didn't know language delays=severely affected and typical language=mildly affected? She is mild in the sense that she had age appropriate adaptive/motor/play skills, has good eye contact, joint attention at an age appropriate time, no rigidity or meltdowns, etc. Her score on the ADOS was borderline.
It's not a case where ds and dd have different interests. For example, dd and ds may be playing Legos and dd wants to be done playing Legos and asks ds to go jump on the trampoline. Ds isn't in the mood to jump so he tells her no. Whining ensues. She has (and has had forever) the ability to play independently using her imagination so that isn't an issue.