An aspiring songwriter from a small steel town, Betty Mabry Davis arrived on the scene to break boundaries for women with her daring personality, iconic fashion style and outrageous funk. She befriended Jimi Hendrix and Sly Stone, wrote songs for the Chambers Brothers and The Commodores and married Miles Davis, turning him from jazz to funk and then went on to ignite stages in the 70s with her sassy sexed up mix of hard rock and bluesy funk, inspiring artists from Prince to Erykah Badu to Karen 0 and Peaches. Then she vanished…