I actually happen to think Applejack as the birth mother and Rariety as the.. temporary stallion makes a great deal of sense myself. Rarity is extremely feminine when compared to Applejack however, what make a character feminite isn't always what makes them maternal. Both AJ and Rarity have little sisters but as we've seen time and time again between the two, AJ is more protective, nurturing, patient and suportive towards her little sister Applebloom well Rarity often struggles with handling herself around kids. Picturing mothers.. I always saw AJ as the mother at heart already well Rarity was more of the type who'd likely have to put more work into knowing how to be a mom since she never seem to know how to handle messes, small mishaps or anything a normal child would do. A pregnant Rarity? ........ Its more comical than practical. AJ pregnant? I dont doubt she'd handle it like a breeze and likely was made to be a mom some day.



That is just my own thoughts on the matter though. All is all, I say this chaos magic you've made for same sex couples is quite nice and I'm glad you always appear to put great thought into these matters.