Daughter of a person's father with that same person's maternal aunt or daughter of a person's mother with that same person's paternal uncle.
My three-quarter-sister is a good person.
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1- Daughter of mother and of uncle (father's brother) simultaneously.
2- Daughter of father and of aunt (mother's sister) simultaneously.
3- Cousin and half-sister simultaneously.
1- First cousin and half-sister at the same time.
2- Daughter of mother and of uncle (father's brother) at the same time.
3- Daughter of father and of aunt (mother's sister) at the same time.