ATLANTA, Aug. 8 (UPI) -- Bobbi Kristina Brown's conservator is accusing Brown's boyfriend Nick Gordon of wrongful death in an amendment to her previously filed lawsuit against Gordon.
The 22-year-old daughter of recording artist Bobby Brown and the late Whitney Houston died while under hospice care July 26 after spending nearly six months in a medically induced coma in various hospitals and rehab centers. She was discovered unresponsive and facedown in a water-filled bathtub in the Georgia home she shared with Gordon.
The Jan. 31 medical emergency that eventually led to her death remains under police investigation. Gordon has not been charged with any crime.
Brown's funeral took place last weekend and Brown has since been buried beside Houston in New Jersey.
"I am deeply saddened by the recent death of Bobbi Kristina Brown," conservator Bedelia Hargrove said in a statement Friday to Us Weekly. "I have filed today an amended complaint against Nicholas Gordon adding a count of wrongful death and for pain and suffering. We will leave no stone unturned in seeking justice for Bobbi Kristina Brown."
The amended lawsuit -- which seeks at least $10 million in damages -- alleges Gordon, 25, was "out all night on a cocaine and drinking binge," then came home, beat Brown and gave her a "toxic cocktail."
When Brown was rendered "unconscious" by the drink, Gordon allegedly "put her facedown in a tub of cold water, causing her to suffer brain damage."
Brown was discovered at the bottom of the bathtub by an unidentified person, who called 911.
The legal documents said Brown was unconscious and had teeth hanging loosely from her mouth when paramedics arrived, suggesting she had been punched in the face.
Gordon is also accused of stealing from Brown and withdrawing thousands of dollars from her bank accounts.
Us Weekly said Gordon's legal team intends to file a countersuit against the lawyers who served him.
Gordon, who appeared months ago on the Dr. Phil talk show to discuss his grief and substance-abuse issues, was not permitted to attend Brown's funeral.