Mayhem and Mystery at the Kitty Kastle

Too many strange things had been happening at the Kitty Kastle for it to be dismissed as just in her imagination. No sooner had Miranda moved the growing cat shelter and sanctuary into its bigger, better location when the mystery began.
Large amounts of money started appearing in the bank account. One day the kitty cats were found playing with new, handmade kitty toys...toys that were monogrammed with the kitty cats' names. Then things started to go bump in the night.
What Miranda didn't know was that their handyman was also discovering strange things around the place. Hidden passageways that didn't go anywhere and the building foundation that extended beyond the inner walls of the shelter. Why was the interior so much smaller than the exterior of the structure? Was it all just a strange quirk of the centuries old building of was evil lurking behind the walls of the Kitty Kastle?