LAS VEGAS, NV - MAY 20: (EXCLUSIVE COVERAGE) Bobbi Kristina Brown poses backstage at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Kevin Mazur/WireImage)
LAS VEGAS, NV - MAY 20: (EXCLUSIVE COVERAGE) Bobbi Kristina Brown poses backstage at the 2012 Billboard Music Awards at the MGM Grand Garden Arena on May 20, 2012 in Las Vegas, Nevada. (Photo by Kevin Mazur/WireImage)