Family Vocabulary - Decipher the Relationships

hi! it looks like based on these clues and most of the answers, this is coming from a first-person POV. I have 2 comments. My step-sister's niece's mother would be another step-sister or me. I don't think we can really say "wife", as there is no indication of there being that type of relationship. I can be single and still be my step-sister's niece's mother.

secondly, my cousin's daughter's grandmother would be my cousin's mother. My cousin's mother is my aunt, not my mother.

also, I think some more time would be helpful!