you are Severus’ daughter, and 14 years old. Your mother left you when you were a baby so you don’t even really remember her. Your father and you have a very strong bond. He’s the best father you could ever imagine to you.
when Severus was a child his mother Eileen was a very good mum and really loved him infinitely. Unfortunately she died when he was 23.
his father Tobias was often very strict and even physically but mostly mentally abusive. So they never had a close bond.
today (autumn holidays, October) Tobias came to see the two of you. He always visits you once a year, and every time your father and Tobias end up arguing and sometimes they even fought physically. So your dad always told you to stay in your room when Tobias was there.
but this time Tobias, your grandfather and Severus‘ father, wanted to see you too. To look at his granddaughter. Even if he didn’t even love you. So now the three of you sit at the dining table, you next to your father, and Tobias opposite you and they’re talking, both suppressing passive anger.