The matriarch of the Flying Wallenda family took what could be her last steps on a high wire, performing with her son in Florida, where they walked 150 feet above the ground. Delilah Wallenda, 66, crossed the half-inch-wide wire stretched between two towers of the Seminole Hard Rock Hotel & Casino in Tampa on Thursday. At one point, son Nik Wallenda nimbly steps over his mother as she sits on the wire. The audience loved it. It was Delilah's first public walk since having hip replacement surgery last year.