Every shortfall lands Una across her older mistress's lap. Their shared legal obligation to avert foreclosure keeps the younger woman bound to Rosamund's authority in the study each day.
Each review ends with bare discipline that deepens into claiming, and the spankings grow stricter as the deadline nears. The intimacy that follows the correction binds them tighter with each passing week. The age gap turns their private corrections into a risk neither can afford to expose.
Una stays for the structure she needs despite the exposure risk. Rosamund fears the emptiness if the arrangement breaks.
Rosamund calls her in after the last document arrives.