G-d created animals, evidently, intact with sexes, in the first six days. No problem there. But if there were both a G-d and a G-dess (assuming the one true old testament G-d is not feminine, that is), the first commandment would need to be ammended or perhaps eliminated. You saw what trouble pride, got Lucifer into, didn't you? All of that old testament wrath came down on him in short order. Vanity is like pride. What sort of G-dess could resist that temptation, particularly if G-d himself adored her? The image G-d made man in was evidently anything but perfection. Without woman to point this out, man would likely have come to nothing fast because of it. And G-d evidently doesn't have time to look after all of his creations once created. We do tend to act like children though. Interesting conjecture.