Andrew Eldritch insisted the Sisters of Mercy were a rock band, not a goth band, despite being considered one of the pillars of the genre. He managed to piss everybody off in the band one by one and force them to quit, and they went off to form The Mission and Ghost Dance (with the lady from Skeleton Family.)
Andrew worked with Steven Soundheim, the guy who did music for Meatloaf and stuff, on this particular album, and honestly it carries a lot more of his sound than it does the Mission guys. The girl is Patricia Morrison who is only there because she's pretty; what little music she played was mixed out.
tl;dr Sisters of Mercy are not representative of Goth and Andrew Eldritch is a shithead