Sources cited by Page Six said she was “ashamed and embarrassed” and viewed the incident as a wake-up call.
Experts have since emphasised the importance of a sustained recovery plan following treatment.
Richard Tatie, founder of Carrara Treatment, told Page Six: “A strong post-treatment plan means continued therapy, accountability, and a controlled environment that supports early recovery.”
He added: “If that piece isn’t taken seriously, even great treatment won’t hold.”
Tatie also said: “Keeping [patients] supported after they leave is what actually determines the outcome.”
He added entering rehab is only the beginning of recovery and stressed the need for an adaptable approach.
Tatie said: “That means identifying what’s actually driving the behaviour and adjusting the clinical approach in real time.
“Good treatment isn’t static, it evolves as the patient does.”
At the time of her arrest, sources said Spears was “incredibly emotional” and concerned about letting down those close to her, including her fans.
She later addressed the situation on Instagram, sharing posts featuring her son Jayden Federline, 19.
Spears wrote: “Thank you guys for all your support … spending time with family and friends is such a blessing!”
The performer rose to global fame in her late teens as one of the defining pop stars of her generation.
She broke through with her debut single Baby One More Time, which became an international hit and helped establish her as a leading figure in late-1990s pop.
Spears went on to release a string of successful albums, including Oops!… I Did It Again and Britney, earning multiple awards and selling millions of records worldwide.
Her influence extended to music videos, live performances and pop culture, with highly choreographed shows becoming a hallmark of her career.
Her personal and legal challenges have included a long-running battle to be freed from her conservatorship, which ended in 2021.