The Texas Theft Liability Act is a civil remedy for suing for damages in connection with stolen property.
You might also have a claim for conversion of personal property.
I agree with Attorney Devere's response. You may also have different claims against the two individuals such as fraud and conspiracy to commit fraud , which allows you to claim punitive damages. You may also have claims against the public storage entity for negligence since the female employee was their employee.
Suggest that you consult with an attorney as soon as possible. You can do so through this website's "Find a Lawyer" tool for your area.
My response herein is an attempt to give you general information and direction and is not intended to constitute an attorney-client relationship as perceived by state law.
It's unknown whether you should sue with the information provided. An attorney would need to understand a few more of the details and see some of the paperwork regarding the unit.
The above statements are provided as general information and not intended as legal advice. Each matter has its own set of unique circumstances that cannot be adequately addressed without consultation. You are strongly advised to hire an attorney licensed to practice law in your state to represent you.