What parallels do we see in Dawn and Lulu's lives?

Lulu's life shows many parallels to Dawn's. Her mother was an unfulfilled artist-type, her father an alcoholic. She too has suffered loss, with her mother committing suicide, her first husband finding another woman even before their daughter Sascha's birth, and her daughter running from home in search of her birth father during her teen years, breaking her stepfather's heart and breaking up Lulu's second marriage.