I have an 8-year-old son and a 5-year-old daughter, and my sister-in-law is currently staying with us. Recently, my 8-year-old has been acting in ways that my husband and sister-in-law consider disrespectful, but I think it's just typical behavior for his age. For instance, my sister-in-law asked him to clean up the playroom, and he picked up his things but decided that his 5-year-old sister should also clean up her own mess. He was disciplined for not tidying up after her, which I don't think is unusual for siblings. Another example: when we realized my 5-year-old forgot her backpack on their way to school, my 8-year-old said, "I told you to pick up your backpack." My husband saw this as bad behavior, thinking he should have carried her backpack in addition to his own. I feel these are just typical sibling interactions, but it’s causing tension at home because I’m always seen as defending him. Any advise is much appreciated!