The mother-of-two shared a picture of herself wearing a mask as she cuddled up to her brave daughter, who was smiling for the camera.
She captioned the post: “I just wanted to thank all the staff at Princess Alexandra Hospital for looking after my little girl these last two days.
“She’s broken her arm and had to have a little operation to fix it.
“Every member of staff were absolutely incredible and looked after Joanie and me in every way possible.”
Natalie shares her youngest daughter with her fiancé, Marc Humphreys.
She also has, Eliza, 10, with her ex-partner Adam Cottrell.
Earlier this week, the EastEnders star posted a rare loved-up picture of herself and Marc on her Instagram page.
The pair could be seen laughing as they gazed into each other’s eyes while sat on a sofa.