"There was definitely a double-standard. ... We couldn't be doing the same things the guys did and get away with it," says the singer of one of the few female bands to infiltrate '80s hair-metal scene.In Penelope Spheeris’s notorious 1988 rockumentary The Decline of Western Civilization Part II: The Metal Years, KISS’s Paul Stanley is interviewed while lounging in bed with a bevy of lingerie-clad groupies; W.A.S.P.’s Chris Holmes chugs a bottle of vodka in a swimming pool; Odin’s Randy O canoodles in a hot tub with bikini girls; Aerosmith’s Steven Tyler and Joe Perry brag about spending millions of...