Documents made available on the Web site TMZ reveal accusations by ex-nanny Quethlie Alexis.
"Ms. Marshall was obsessed with making sure that her baby was 'sexy.' Ms. Marshall knew that the correct amount of baby food was 3 ounces every 3 hours ... Ms. Marshall insisted that the maximum I was to give was 2.5 ounces," Alexis said in a sworn affidavit obtained by TMZ.
According to the document, Alexis claims that Smith enforced this rule "making sure the baby monitor was kept on all the time." The nanny described Dannielynn as "badly underweight and not thriving, as a baby should."
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According to affidavit that was executed Dec. 4 of last year, Alexis says that Smith threatened to "shoot her" if the baby ever addressed her as "Mummy."
Alexis also claims that while she worked for Smith, the model tried to kill herself two separate times.
"On the first occasion, she drank in my presence an entire bottle of what I believed to be a sleeping aid," Alexis says.
Alexis claims that Smith also tried to drown herself in a swimming pool. An incident that "Entertainment Tonight" also reported recently.
Sources told "ET" that Smith was found unconscious and face-down in the pool at her Bahamian home in December. Discovered by Howard K. Stern, her bodyguard revived her.
"I don't know if it was an accident," Khristine Eroshevich told "ET." "Anna never talked about her actions or her feelings. In retrospect I wonder if that was a suicide attempt or if she was confused."
Alexis also claims Stern rescued Smith from the pool. She says she heard Stern say after the rescue, "If anything happens to you, I would go to jail."
The affidavit also details the relationship between Smith and Bahamian Minister of Immigration Shane Gibson, who took heat this week for photos which surfaced of he and a fully-clothed Smith hugging in bed.
Alexis said she never witnessed Gibson and Smith having sex, but that the minister would, "spend hours alone with (Smith) in her bedroom" on a "daily basis."
In a statement given to WFOR TV in Miami, Stern called the report that Smith had an improper relationship with Gibson "reprehensible."