if I were a MC, I would push Anya against the wall and give her such a cruel choice - if she wants to give birth so badly, then she gives birth to a girl for me (and prays that it will be a girl) - and groom her to be my fucktoy, or she takes and swallows the pregnancy termination pill herself. if a boy is born, then she must get pregnant by her son and give birth to an inbred daughter-granddaughter for me who will become my fucktoy (let's assume that Anya will still be of fertile age by that time, when her son turns 10) in my opinion, a rather cruel choice.
