Staff told her to walk despite the pain, which remained "excruciating" when she was discharged, she said.
Three days later she was desperate.
"I was suicidal, I was screaming and crying from the pain. It was either go back or order a coffin."
Baker, a food packer, called an ambulance and was re-admitted to Middlemore.
She received pain relief but it was four days before x-rays were done. They showed a break and a hip replacement operation followed.
Baker, with the help of an advocate from the Nationwide Health and Disability Service, complained to the board about the delay in getting further x-rays.
Her GP, Selva Kumar, saw the first x-ray and also could not see the break. That was sometimes the case when a person suffered an impacted fracture, which would not become apparent until another movement displaced the break.
However, Baker's ongoing pain should not have been ignored by hospital staff, he said.
"It's disappointing ... her symptoms should have been taken more seriously."
Dr Johnson, who commented on the case with Baker's consent, said ongoing pain was consistent with soft tissue injuries and Baker was able to walk.
"We will be reviewing the process and we apologise to Mrs Baker for this delay. It is also of concern to us that Mrs Baker feels that staff did not adequately acknowledge and respond to the degree of pain she was experiencing during the first admission and we apologise for that."
The board had written to Baker and she had offered to meet her, Dr Johnson said.
Baker has not yet decided whether to do so, but hoped no one else suffered like she had.
"Anytime I talk about my pain I just burst into tears."