A lot of people including my self think Momonosuke is a Prince of Wano. And because of that people think Kinemon isn't really Momonosuke's father because they don't see Kinemon as a Shogun.
I don't think Kinemon is the Shogun of Wano either but I do think he's Momonosuke's father. So I believe that Momonosuke's mother is the Shogun of Wano.
I think that would be an interesting thing for Oda to do. And it could mean a lot to Zoro because she'll probably be an amazing swordswoman and she's female could remind him of Kuina.
I don't think Kinemon is the Shogun of Wano either but I do think he's Momonosuke's father. So I believe that Momonosuke's mother is the Shogun of Wano.
I think that would be an interesting thing for Oda to do. And it could mean a lot to Zoro because she'll probably be an amazing swordswoman and she's female could remind him of Kuina.