I'll take number one. I think the logical antecedent of the last her is the first her and second her, even though the daughter is the first noun. eg. I love her daughter and her cooking. The best interpretation is that I love the daughter's mother's cooking. But I could be wrong.
Unless the mother is a transvestite, then I'll say (4) A human and his/her/its offspring.
Either way, I'm going to ask for a new author, preferably one who uses less commas.