It's that old expectation thing rearing its ugly head. I love that you are sensitive and loving, and I especially like that you might actually meet with your sibling ... for lunch, not a lifetime of perfection.
I don't typically promote pieces I've written, but this is pinned at the top of my profile for a reason. ;)
https://medium.com/crows-feet/expectations-are-a-bitch-dont-let-them-ruin-your-life-6be99e588600