The 37-year-old singer had checked herself into a 30-day programme in March in the midst of her father's ongoing health issues.
According to TMZ, Spears recently appeared in front of a Los Angeles Superior Court judge. During the hearing, the singer claimed that Jamie, 66, illegally made her enter the facility after she ditched her doctor-prescribed pills.
Her mother, Lynne, who was also present during the hearing, backed Spears' claims.
Jamie has been in charge of his daughter's assets since a court ruling in 2008 following her highly publicised breakdown.
Despite the agreement, he does not have the power to put her into a facility or ply her with drugs without her consent.
The judge, however, did not grant the singer's requests for more freedom and adjustments to the conservatorship.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)