Three's Company by Carolyn Faulkner

Three's Company is a combination of two popular Carolyn Faulkner stories, Trinity and Menage.

Trinity:
Anthony is a severe husband, believing in firm - even harsh - spankings for his wife, Tina. When Tina's best friend Charlotte finds out that Tina is spanked, she agrees fully with Anthony's disciplinary regime.

In fact, she suggests that what Tina would benefit from most is an expansion of that regime. Anthony must travel a great deal, and what Tina really needs is a governess while her husband is gone. Charlotte fulfills that role admirably, introducing many refinements into Tina's daily discipline schedule, including punishment enemas, rectal temperature taking, hard canings, and regular bedtime spanking.

Menage:
A spanking story with a very unusual twist - this young lady has not one, but two severe spankers in her life. As a consequence, Gabby is a very often- and thoroughly- punished girl.