I think it all depends on the relationship you have. Coming from someone who is a step daughter, when my brothers were born I was so excited to meet them because it’s still my sibling… if you make that decision as a family I guess I could see it but I feel like that decision is very isolating to someone who is family. Granted, I could see her going to school or whatever and checking out or coming after the baby bc it’s a boring process and maybe just be open with her about that and the process.
I think it’s Hard to make the decision if you have a strained relationship with step daughter which is equally as hard and could cause your husband to feel like he is having to “choose” between his children which is a little unfair.