I called my sister to ask how her son's leg was and then said I was sorry. I said, "I should've come." She said "oh no, that's okay." Which made me feel worse. As she in turn was wanting to make me feel better. Once upon a time, we used to fight and scream and kick eachother and hate eachother. But see, all of that was okay. We were sisters. Tearing eachothers' hair out had no consequences. It's exactly this that changes as you get older. Not only between sisters. In general: the older you get, the greater the consequences of any wrongful action.