Is Whitney Houston’s mom pulling a Joe Jackson?

Whitney’s family is accusing Cissy Houston cashing in on her child’s tragic death by planning to write a tell-all book. Via TMZ reports:

Sources close to the Houston family tell TMZ … Cissy’s new publishing deal with Harper-Collins for a memoir is merely a lame attempt to make money — since Whitney left everything to Bobbi Kristina — and not at all about honoring the late singer.

One source said the book — which is slated for release next year — could also be a PR move for Cissy, claiming … “She will try to come out looking like the world’s greatest mom, when in actuality, she wasn’t.”

Their is not doubt that Cissy is still mourning her daughter’s death, but do you think the Houston family has been a little too candid and eager to sell Whitney’s story to the media?