"I wish him the best," Nist tells PEOPLE of what she'd like to say to Turner. "And that I know that he was in a very difficult situation and that good things will come to him"

Turner announced, in a Dec. 11 interview with People, that he'd been diagnosed with an incurable form of bone marrow cancer called Waldenstrom macroglobulinemia. In an interview with People, Turner said his diagnosis played a part in his breakup with Nist.