bico-kun's avatar
I see it as a bit complicated. I figure both Twilight and Celestia share aspects motherhood over Spike. Celestia certainly had to take care of him as at least a ward at first, since Twilight was so young, but Twilight did hatch Spike and seems to take care of him in a motherly fashion now, though also treats him as assistant/friend. I see Celestia as being the "working mom" type while Twilight acts as a "maternal big sister," I suppose.