And there are never really endings, happy or otherwise. Things keep going on, they overlap and blur, your story is part of your sister's story is part of many other stories, and there is no telling where any of them may lead.
Having beef with someone is unnecessary and avoidable. Whatever the issue, if not positive, it is an opportunity to cut the excess fat from an unhealthy dietary network. Simply excuse yourself from the table of negativity and lean forward in peace.
Now I existed solely thanks to the quantum paradox, my brain a collection of qubits in quantum superposition, encoding truths and memories, imagination and irrationality in opposing, contradictory states that existed and didn't exist, all at the same time.