A modern young married FLS Domina  never  endures pregnancy. Its effects, temporary and permanent, aren't congruent with her status, responsibilities, or pleasures.  Plus, random fertilization produces random Offspring.  Breeding Slaves, by contrast, are Inseminated annually with genetically modified mixed-gender twins, perfect exemplars of both FLS genders.  Male embryos as Sissies. Female as Dominas.  Her Submissive husband often gets to choose a replicant of a female he admires.  By age 13, an FLS girl is virtually mature. Eager to give Sissy daddy all the Care and Discipline he needs. Her Sissy Brother as well.                 

I'm Leslie, a 24 year old unmarried Sissy. I've been affianced twice. Both engagements were abruptly cancelled by Mother. She wants me to marry a Master. Or be sold to one. In the interim, I have a v strict Nanny.