What does this mean, "You mean to say that after all you are really going to be the kind of woman who the baker won't let near the bread"?
All the way through "Girl" the mother alternates between giving straightforward advice and delivering lines that to an outside might sound close to abuse. The listening girl protests against the latter comments. The lines you asked about were said after one of the girl's protests, and they sort of sum things up. A woman who the baker lets near the bread is one that he trusts, so the mother finishes her speech by essentially topping her daughter's last protest and saying, "You mean you won't be a woman he trusts?" (You won't be a woman who is and appears good?)