The video was captioned, "Theirs [sic] been terrible rumors circulating for months ... @kingbobbybrown would like to share a message with you all ... From our family to yours ... Thank you for all the well wishes and prayers for his daughter #BK .... But let it be known that #GOD holds the glory .... continue to #PrayForBK #Salute big bro and know that #LaFamilia has your back to the end"
The user, iamdmobe, doesn't list his or her name or reveal how he or she is connected to the Brown family.
A source close to Bobbi Kristina's father told ET on Sunday that this isn't the first time Bobby has said this. According to the source, he has claimed that Bobbi Kristina is "aware" that her family is there when they visit.
Bobbi Kristina has been on a ventilator in a medically induced coma since she was found unresponsive in a bathtub of an apparent drug overdose on January 31.
Her mother, Whitney Houston, was found dead in 2012 in a bathtub in the Beverly Hilton hotel. Police ultimately listed the cause of death as a drowning, and said she had taken drugs prior to her death.
At the Dallas concert, Bobby Brown didn't say whether Bobbi Kristina was conscious, or expand on what he meant by the phrase "she's watching me."