Yess I do agree it is such a funny and interesting thing to talk about, I'm taking about Will being a dad! Tho it's difficult to imagine how Will would react to some things, so it's good I found my people here<3
Okay so I wanted to give some thoughts about him having a daughter first, I do agree a potential daughter would let Will get away with weird behaviour like staited in other posts, due to fear to rejectment and all of that. I also really feel like she would keep things hidden from him, I don't imagine him as the 'overprotective' parent like most people would think, but would control his daughter in a not so parental-like way. If this makes sense. An example would be her personal things in her room, like as if he needs to know what she's feeling and if she's feeling something he's not aware of. So as this sounds, no good at all. If the daughter is a sensible/fragile person, and is in the artistic field, it would make sense for her to keep a notebook with her so she can write what she feels in that moment. (It would be interesting to know how Will would see his daughter if she's a sensible person, like so fragile that the people can eat her up.)
And I also feel like there's something in her mind that tells her not to give too much information to her own father, I imagine her being paranoid to the thought of her father looking at her personal things, and him knowing everything she does.
Let's imagine first the picture of a teenager that is naturally a sensible person, a girl that feels too much and is too much empathic. She understand her own father has some problems, and doesn't want to be a burden or being looked down just because of her fragile nature. So she does everything for Will, including outside for other people around her (like school/friends). Mixed with fragility and the history she has at home, this would lead her to put herself in danger without realizing it. Sounds like Will can't let her go if she's like this, doesn't he? He probably knows better, and would know how to make her feel bad if she disagree with something.
So sorry if this sounds a bit cracky, I wanted to write down some of things I had in mind since the last post :') I hope these have somewhat sense and I hope this somewhat could open something new to muse about! aha

She would likely be very quiet, but very disruptive. It would be hard for Will to know what she’s truly up to. She would look like a quiet, dreamy girl but would know well how to hide secrets (she learned from the best).