The girl was sold when she was 16 or so. Parent's trained her at home. Married new owner/master on her birthday I think. It was a short story 20 to 30k. Author only wrote one story on bdsmlibrary.

Shown to Master in Cage. Cage was wheeled into a Van.

Master was called Lord something.

Tina_S or Slut_T was the authors name.

I enjoy Cerberus stories and checked them and this one is not his.

Thanks for your help!