As a co-founder, the project just as much yours as it is hers. Is there a chance that you can reconcile your differences if you believe in the product? I though

As a co-founder, the project just as much yours as it is hers. Is there a chance that you can reconcile your differences if you believe in the product? I thought the benefit of having co-founders is that you can pull each other into line when the other steps out.