Libel

If a New York attorney representing a client – currently residing in New York - against criminal charges initiated by the Florida State Attorney, libels the victim (residing in Florida) via a letter to the Florida State Attorney (copying the victim), can the victim (with clear and unequivocal proof of defamation) file a complaint with the New York State Bar and further, can he/she file a lawsuit against both the defendant and the law firm representing him. If not,are there any alternative options for redress?

The damaged party can file any ABA complaint or civil lawsuit of his/her own choosing.