Bobby Brown, who celebrated his 46th birthday on Thursday, spoke to Access Hollywood outside Emory University Hospital where Bobbi Kristina has been on life support since Tuesday.
The 21-year-old aspiring singer and actress has been unresponsive since she was found face down in a bathtub in her Georgia home on Saturday.
Bobby Brown told Access Hollywood his daughter is "doing good" and that the family is praying for her.
The Houston family confirmed Monday that Bobbi Kristina Brown was "fighting for her life" and reiterated her father's request for privacy.
Bobby Brown said in a statement Tuesday the events of his daughter's hospitalization were being investigated and denied earlier reports that she was married to her boyfriend, Nick Gordon, who found her on Saturday.
Sources close to the situation told Access Hollywood reports that the family was gathering to say goodbye to Bobbi Kristina were "a flat out lie." Another unnamed source told USA Today she's "not brain dead," contrary to reports.