For some, pain IS pleasure... it's not always punishment, as I'm assuming Myri is referring to in her statement of marks displaying her pride, and her master's pride.
If pain is pleasure, then it's just as if two people making love. We all make love in different fashions (especially in BDSM!!!)...that's not pain just for pain purposes. She loves her Master and is potentially taking pain for him, as well as for herself, which also makes her a good submissive to HER master.
To each their own. That's the beauty of BDSM- so many different likes and dislikes. Personally, I find scat repulsive as well, but you ladies don't and who am I to judge? It's actually one of the few fetishes I can't understand... but for you, it is possibly a level of your devotion and submissiveness or you just plain enjoy it. I would never take that away from you. Myri is no different. I'm not into her level of pain, but I would never take away from her its meaning or pleasure.
As to the question at hand...
Hmm- I think I'm having a hard time understanding what is included? Are you naked? Can they do whatever they want to your body- just no interaction with theirs? Are toys allowed?