Yes and no. There's a time limit of sorts in that you need to bring the different factions to peace before they start killing each other. But once you manage that, you're basically free to do whatever you want. I'm not sure when you last played but compared to the version about a year ago, they are much more aggressive now. If you don't start bringing them together as soon as possible, you could have 2-3 kingdoms conquered within the first week.
She can't be recruited if you defeat the Bumpking, you would have to start a NG+ or a NG to recruit her.
If you still have the Bell you can use it to turn Harvest Princess Female or vise versa, if you gave it back then tough luck xd
You were able to get the ceremony? I thought that it was only available on real-time full moon days, maybe I'm stupid. BTW yes she currently cannot get pregnant nor recruited. That's planned content.
