Eric Dane is relying on his estranged wife Rebecca Gayheart’s support as he battles ALS. During her appearance on Monday’s episode of the  “Broad Ideas” podcast , Gayheart, 54, opened up about how she and her daughters, Billie, 15, and Georgia, 13, are navigating the “Grey’s Anatomy” alum’s serious health battle. “I’m definitely trying to show them that we show up for people no matter what,” Gayheart said about her kids. “He is our family. He is your father,” she continued. “We show up, and we