Although I cannot be sure about the laws in Florida, I will tell you that in Maryland, you can absolutely have her testify. My ex's 3rd wife and I became quite close during their separation and she was calling and e-mailing me nearly everynight for a while, telling me her concerns for my children. (Though they had since reconciled, when I took him back to court for denial of visitation, I asked my lawyer this very question, and a judge did grant the subpoena for her. Even though they are married, and under normal circumstances she would not be forced to testify against a spouse, because children were involved, her testimony falls under a different statute. This can prove very valuable testimony if done correctly. Good luck!

