She had thought that the Head was just old enough to get married and father children, and the only choice he had was to find someone who wasn't threatening.
Actually, Feng Yue had always believed that the Head should find someone from Shadow Door to get married, because these girls were not a threat to the Head, and they were even devoted to the Head. If all the Head wanted was a child, any girl from Shadow Door would be willing to give birth to a child for him, but not admit it later.
If he chose someone beyond Shadow Door, it would be fine too. If he could find someone who was ordinary and quiet, that would be fine.
She already felt that it was not worth the while to use some of Shadow Door's forces to deal with water robbers, on the way to the Feather Mulberry Land, but Feng Yue thought that since the lady was not trained at Shadow Door, it was okay that she wasn't physically strong enough. It was just a matter of consolation.