Maribelle is adorable! How old is she? I imagine Lulu will easily take the "dominant" position and they will only spar for a short amount of time, but it really depends on the two does. I have 2 boer does that just can't work it out. It's great that Lulu is eating and behaving normally, if you grain feed then I would just watch them for a few feedings and make sure Lulu is not overly aggressive. Usually grazing & feeding together seems to bond them in my opinion! Throw a little white pine bough in there for them to share maybe?