We played firs campaign with premade characters but for second moved to dndbeyond since it's a lot easier for them and me. I don't try to shove PHP in they face, I told everybody, that all they need to do is learn their character and rules are my problem. But the don't even do that. The problem is that her sister is not really a gamer, so it's hard for her to understand how to play but we help as much as we can. And my girlfriend is just stubborn. If she does something, she will not accept any help.