Who is that woman on the back cover dancing with Paco?

It was Paco's wife. Later deleted from the film.

Before editing begin they had a love story with Paco, but after trimming the fat they eventually decided to put that in the film. I've always wondered if the actress that took that role saw final cut and was heartbroken over that.

" Tell me mom...when your little girl's on the slab...where will it tickle you?"

She was part of an entire storyline that never made it in the final cut of the film. It's a shame.