Whitney Houston and her daughter Bobbi Kristina.

As the one year anniversary of music legend Whitney Houston's death approaches, mom Cissy Houston's tell-all "Remembering Whitney," which was released Jan. 29, is being slammed as "disrespectful" by Whitney's daughter Bobbi Kristina.

The 19-year-old, who lost her mother on Feb. 11, 2011, took to her Twitter account last week to voice her feelings about her grandmother.

"ANYTHING concerning my grandmothers Book I & @nickdgordon OF COURSE personally have NOTHING 2 do with I ask you pls RESPECT tht Haven't read & won't," she wrote to her nearly 121,000 followers.

Nick Gordon is Houston's informally adopted son and is now in a romantic relationship with Bobbi Kristina.

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