By Daniela Perez Cherelle Griner discussed her conversation with the eight-time WNBA All-Star who is currently serving a nine-year prison sentence in Russia. Brittney Griner’s wife, Cherelle, described a recent phone call with the WNBA star as “the most disturbing phone call I’ve ever experienced.” “You could hear that she was not O.K.,” Cherelle said on CBS Mornings. Cherelle recounted the conversation and described the eight-time WNBA All-Star’s mental state as she serves a nine-year prison sentence in Russia. The Mercury star was arrested at a Moscow airport in February and accused of havin…