I don’t know what you’d prefer for the sub’s gender, but the only dommy mommy fiction I can recommend is Unnatural Magic by C.M. Waggoner. It’s a great story with good world-building, and it’s very political. The sequel (which I don’t think is actually a direct sequel) seems to have a female/female pairing, but I haven’t read it yet.
I don’t know what you’d prefer for the sub’s gender, but the only dommy mommy fiction I can recommend is Unnatural Magic by C.M. Waggoner. It’s a great story with good world-building, and it’s very political. The sequel (which I don’t think is actually a direct sequel) seems to have a female/female pairing, but I haven’t read it yet.