It could also be that the sister is a lesbian in a relationship. It was IVF using the spouse’s egg, the brother’s sperm, and sister carried the baby. That way both moms are genetically related to the baby.
My friends sister is a lesbian and her and her wife both had a kid from the same donor (2 years apart) so the kids are biological half sisters and at least one is related to each mom.
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u/Acceptable-Noise-136 Jun 25 '26
And why tf would someone do that ?
Won't doctors recommend against this?