Published: Nov 27, 2012 6:52 PM EST
Updated: Nov 27, 2012 7:01 PM EST

FORT MYERS, Fla.- Christine Dunn's father, Thomas Lozier, is speaking out after Robert Dunn was found guilty of killing his daughter, in January 2008.

Today, a jury found Dunn guilty of first degree murder, armed burglary and child abuse in the January 2008 shooting at the day care where Christine worked.

Thomas Lozier was in the courtroom every day for the trial. After the verdict he said, "personally Mr. Dunn doesn't exist to me. What they do with him is fine with me. We just want to move on with out lives."

Dunn faces the death penalty or life in prison. That will be determined next week during the penalty phase, when the jury will be brought back in.

Lozier says while the verdict brings some closure, nothing will give them back what they lost. "Brings some closure, there is more to come down the road for us, definitely brings a little more closure, no such think as totally closure. The loss is too big."

He says his main focus now is his granddaughter, who was there that day and witnessed her mother being shot and killed. "She's a wonderful granddaughter, we try to keep her in a safe happy place. She's done nothing but made us proud, and my daughter had done nothing but made us proud."

Dunn's lawyer David Brener says they were disappointed in the verdict, but understand how the jury reached the decision.

He says his client suffers from mental illness, and that will play a role in next week's penalty phase. He says, "our obligation is to prove to the jury that there is a human being involved here and that he unfortunately suffers from a sick and diseased mind."