I'm tempted to put on my Militant Bisexual cap and ask why this is a more vital question than "Is monshu blond or brunette?" or "Does monshu drink French or Viennese roast?" But then I read the context and see that the "she"'s are quite ambiguous there if one doesn't know that they refer to Mozhu (墨珠) and not monshu (門主). Sorry for the confusion!