Question for you guys concerning foster children...

I also I have a question similar to this. My sim is married with Vlad and has a son from him. But she also has a daughter from Caleb Vatore and he sometimes comes and visits his daughter (uninvited and without an ask to leave option most of the time). So if I make Vlad adopt her as care dependent (even though they dislike each other because fucking Vlad keeps hissing) how would it affect her relationship with her biological father? Would he still show up at my house randomly? Would Caleb still be considered as her father? I want to do this but I am scared that this interaction will harm her relationship with her real father. (Btw do you know if male vampires can get pregnant by alien abduction?)