Oh Monica, I feel terrible for you! Using a beloved pet to inflict pain on someone is true abuse. I hope and pray that Pearl is found safe and sound, please keep us posted. I am way too far away to help you with anything other than good wishes…and not so good wishes for husband.
Get all the helpers you can, take yummy smelly treats or cat food, if you have time to make some posters with her photo, do that. Knock on doors, posters to mailmen, trash men, etc. What are the odds that he told you the truth about where he left her? Tomorrow call all the vets and shelters for 25 miles all around. You might call the police now, sounds like theft to me, they probably can't help search but can keep an eye out for her.