Sissy Dreams: Sally's T.o.t.M.

My mistress took her feminization of me seriously: in addition to the hormones, she made me endure a Time of the Month which coincided with hers. I think it was a sort of retribution – why should I be allowed to feel gorgeously feminine all the time and she couldn’t?
I had to wear ugly, itchy, uncomfortable, heavy, sweaty clothes until she told me otherwise.
But this month was different because she brought home two guests – Danielle and her mistress, Paula. My confusion increased when she told me Danielle was going to be my lesbian lover!