I have neither, but hypothetically: Not well.
Wife: Outrage at being lied to and possible divorce depending on the circumstances. If it's hardcore stuff, I'm out (I'm not sure how I'd react to girl/girl only, it feels less... insulting, somehow, to consider). If it's just modeling, I could get over it. In either case, not being told about it would be a fairly major issue though.
Daughter: Disappointment, probably a bit of shame and guilt over my role as a father initially, but I think I'd grudgingly accept it eventually. It's her life and she can live it however she wants.
Wife: Outrage at being lied to and possible divorce depending on the circumstances. If it's hardcore stuff, I'm out (I'm not sure how I'd react to girl/girl only, it feels less... insulting, somehow, to consider). If it's just modeling, I could get over it. In either case, not being told about it would be a fairly major issue though.
Daughter: Disappointment, probably a bit of shame and guilt over my role as a father initially, but I think I'd grudgingly accept it eventually. It's her life and she can live it however she wants.