Bobbi Kristina Brown tweets about alleged cocaine-snorting photos

Whitney Houston and her daughter Bobbi Kristina Brown arrive at a pre-Grammy party at the Beverly Hilton on Feb. 12, 2011, in Beverly Hills, Calif. Gettyes
(CBS) In the past 24 hours, photos have popped up that allegedly show Bobbi Kristina Brown, Whitney Houston and Bobby Brown's daughter,  snorting cocaine. She tweeted that "it's really not what it looks like."

Pictures: Whitney Houston and Bobby Brown

"The pictures_ a former very dear person to me did this. Set me up to make it look exactly what it looks like. God will smite them yes..[sic]," she tweets.

She continued later, "But it's really not what it looks like.. People will do anything for money which is extremely sad, and I'm very hurt by this.[sic]"

The pictures appeared in the print edition of the National Enquirer.