Lori Braun Defamation Lantana Florida Nationwide

I have been the owner of a Pet Sitting Service since 1996 in the state of Florida. I am filing a defamation of character report on Lori Braun. She is accusing me of false information, stating that I had gotten angry after she had contacted the references I provided, and that I was a rip off. I did cancel her before her trip began, yes... due to the fact that 2 of my client references warned me not to take her as a client. they felt she was not stable and very paranoid, and that I should reconsider taking the job. She rescheduled our first meeting 3 times, due to some emergency... only then to schedule meeting when it was convient for her. I offered several different times to meet, none of those met her availability. I have never had one complaint in 19 years of service. My clients were only trying to protect me by warning me to not take her as a client, even if it meant cancelling her prior to trip. I felt my reputation was a stake either way. I chose to cancell because I didn't trust her.