That, and why does her mother, at 25, have a different last name from her own child and also has three other children?
I’d agree that it’s ethically wrong. As to mom,child having different last name, mom may never have changed her maiden name, but chooses to have the children’s last name after dad. [You know, there are women with careers who use their name in business and a change in last name can cause their clients not to find them. Doctors/Lawyers, etc. I know one family where this is the case. I’m not saying that’s the case here, but it does happen.]