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lobo1217 t1_j65rvlb wrote

All correct apart from sister. She is NOT your sister. Your father is your "half brother", and I would call your mother and your father also half siblings to each other, but that doesn't make your mother your biological sibling. Your mother would be your sibling-in-law.

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TheCardinalKing t1_j66ox54 wrote

I guess your mom would be your half-sister, but it's the closest I could get if we want her to be your grandma too while keeping blood-relation. I think managing to keep everyone being blood-related is good enough.

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