Hired a caregiver that formerly worked for a home care company I employed. Any advice?

We had a healthcare worker for 12 days caring for my mother, through a company. She left the company and caring for my mother for another job elsewhere. A month later the job did not pan out and we were ending our contract with the company and we hired this person. Our contract said we could be sued if we hired their employees without waiting 6 months. But being as she didn’t quit this company to work for us, we think we are in the right.