Mariah Cary was reportedly not in touch with her sister Allison in the final month of her life despite being told she was dying a friend of the singer's late sibling alleged Dave Baker who says he was Pals with Allison for many years and helped provide her with Care at the end of her life spoke about Allison's final days in an interview with the son Allison and Car's mom Patricia both died on the same day this past weekend