Kathy Hilton's feud with Lisa Rinna and her sister, Kyle Richards, but there just may be some glimmer of hope when it comes to one of those strained relationships.While walking the red carpet at BravoCon on Friday in New York City, Hilton spoke to ET's Brice Sander and offered an update on where she stands with the former star and her baby sister.As diehard fans know, Rinna has been at the center of controversy since season 12 kicked off — from her one-sided feud with co-star Sutton Stracke to her recent drama with Hilton. The latter came about after the cast trip to Aspen, Colorado, where the women recall Hilton having a «mountain-sized meltdown» in a nightclub.