If you breed two minecraft cows that means that one has to be male right? So if you milk both of them then one is a bucket of milk and the other is a bucket of u know what. And the best bit is that you can drink both buckets.
If that were to happen and Druj were to realise, she seemed like the type to just return to a servant role. I don't know why but I'm sure that she actually liked being treated "well" so if she actually finds out, which yeah she most likely is, I'm sure she'll just help her get more powerful...