Dammit, I've done a Mother/Aunt/Daughter (HB7) set before with a Number/Kiss-close, does that count?
To be honest though she was out on her sisters Hen Night lol. All I did was first befriend her Mother and Aunt(Who were together sat next to her whilst I was trying to game her, she introduced me to them) and then it allowed me to isolate her, hell her Mum did the hard part for me, she actually said that her and her Aunt were going to go get some drinks, I moved quickly and got a Number and K-close. I'm slightly proud of that one

didn't go anywhere after the day 2 though
Though a Father/Daughter set, that would be interesting and it's a rarity I don't see often, I'll keep this challenge in mind for that I think. I hope someone does this before me however, I've never heard of this being done tbh