acat had made the acquaintance of a mouse, and had said so much to her about the great love and friendship that he felt for her, that at last the mouse agreed that they should live and keep house together.

This is all lower case. Can you fix that?
Acat had made the acquaintance of a mouse, and had said so much to her about the great love and friendship that he felt for her, that at last the mouse agreed that they should live and keep house together.