Have you ever thought about doing a comic involving a shrinking woman? Or maybe a m2f transformation followed by shrinking. I feel like it could be fun and would love to see something.
Your artistic skill at portraying alluring sexuality with poses of the body is amazing. Your sense of fashion is also wonderful. Are the designs your own? I love your own? They are lovely!
It's funny how you give people a picture with no context and they will go right into their own fantasy as to what it is. The magic user thing is just one possible interpretation.
Now, given the nature of her restraints, she'd almost have to be a seriously powerful mage from a country - or perhaps even a parallel universe - that Mistress' leaders are having considerable trouble with. Since Allison had no real idea what Mistress' people are, they must be fairly new in his world. I do recall that, in the first series, he said that the demons had been on Earth for a few centuries. But he was considerably surprised by the demons apparent relatively normal appearance. The two datums seem to conflict, but I'm sure that The Author could explain, if he/she choose to.
Madeline, seems to have made several rather good points. Thick runed manacles in this universe (where lighter chains are given to more willing submissives and slaves) seem to say that only is she a powerful magic user in her own right but, as one would not exactly be "reduced" or subdued into submission/slavery. Though the wrist manacles seem to be missing.