Note - Bobbi Kristina is still in a coma as of today with multiple organ failure.

From http://pagesix.com/2015/02/10/family-to-let-bobbi-kristina-die-on-same-day-as-whitney/

Bobbi Kristina Brown’s anguished relatives have agreed to take her off life support — but want to wait until Wednesday so she can die on the same date as her tragic mom, Whitney Houston, sources told The Post.

Bobbi’s grandmother Cissy Houston floated the idea of a Feb. 11 death over the weekend during discussions with the Brown family at Emory University Hospital in Atlanta.

The Browns gave their blessing to pull the plug at the stroke of midnight to align the date with the 2012 passing of the legendary singer at the Beverly Hilton Hotel.

The move is a symbolic way to keep the mother and daughter together for eternity, according to a Brown family source.

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From Wikipedia

Bobbi Kristina Brown (born March 4, 1993)[4] is an American reality television and media personality, singer, and heiress. She is the daughter of singers Bobby Brown and Whitney Houston. Following her mother's death on February 11, 2012, Brown was named as the sole beneficiary of her mother's estate.