The "Do I" star, 20, was admitted to a Los Angeles area hospital this week and reportedly placed on a psychiatric hold after trying to end her life.
Her suicide bid occurred hours after she was attacked on social media for appearing to have cheated on her boyfriend, basketball star Kyrie Irving.
She shared a photo of a flower on Instagram and expressed her gratitude for fans' well wishes, after devotees began spreading the hashtag #StayStrongKehlani on Twitter.
"Thank you for the love," she captioned the image, before revealing she had been discharged from hospital.