She also accused Alicia and her sister-in-law Pat Houston of conspiring to murder Bobbi Kristina (who was already brain dead and in a hospice).
Bobbi Kristina was pronounced dead in July 2015 at age 22 after she was found unresponsive in a bathtub in her townhouse six months earlier.
Bobby Brown, 49, sued Showtime and BBC for using old archive footage from a 2004 reality TV show in a new Whitney Houston documentary.
Brown is seeking $2 million in damages and an injunction to prevent Showtime and BBC from airing the documentary.
Read Leolah's Facebook post below.
"Listen FB, I'm going to be completely honest wit you. My brother Bobby doesn't even OWN his daughter BOBBI Kristina's Serenity House! His so called wife who literally treated my niece HORRIBLE owns it along with her friends! Why this is so has absolutely nothing to do with me! IT IS WRONG IT IS WRONG AND IT IS TOTALLY WRONG! WHERE IS THE MONEY GOING? INTO HER POCKETS! THEY CARE ABSOLUTELY NOTHING FOR BOBBU KRISTINA! IN FACT, THEY ELPED KILL HER! I AM SICK OF THESE PEOPLE TRYING TO GO TO THE BANK ON MY NIECE [AND] SISTERS NAME! ALICIA, I KNOW TIS IS YOU! YOU GOT A DAM NERVER! IF YOU CARED EVEN JUST A LITTLE BIT FOR MY NIECE, WHY DID NOT EVEN ENCOURAGE HR FATHER, BOBBY TO STAY AT HER BEDSIDE WHEN SHE WAS IN HOSPICE!?! I KNOW WHY! IN FACT, IT WAS THE OTHER WAY AROUND! YOU MADE CERTAIN THAT HE AD A LIL TOUR SET UP "PURPOSELY" TO ACTUALLY KEEP HIM FROM HER BEDSIDE SO THAT YOU AND PAT COULD FINISH PLOTTING DOING WAT YOU ALL WERE DOING! NOW YOU GOT THIS SERENITY HOUSE AND DON'T EVEN HAVE MY BROTHERS NAME ON IT! ALL OF YOU MONEY UNGRTY BEAST ARE GOING STRAIGHT TO HELL WHEN GOD CATCHES UP TO YOU! TRUST ME YOUR DAY ID COMING! TE NEVER OF YOU! AFTER ALL YOU DID TO MY NIECE! AND BOBBY YOU SHOULD BE ASHAMED OF YOURSELF FOR LETTING THIS WOMAN DO THIS TO YOU AND YOUF FAMILY! I'M DONE!
AND I AINT TALKING ABOUT THE DONE YOU THINK I'M TALKING ABOUT!!"