She tests your vaginal tightening augment.

"Now we need to test your vaginal tightening augment."

You grimace uncertainly. You are already overwhelmed from these new experiences.

She notices your trepidation, "Oh no, girl! There is no higher honor for a breeding slave than receiving your first vaginal tightening in service to your Master!"

You nod, more to convince yourself than her, "Anything in service of my Master."

You were blessed to have been purchased into the harem of someone who is so wealthy and powerful. To be modified for your Man's pleasure was indeed an honor. Still, something was nagging you.