Divorce papers held by her lawyers and leaked to the media earlier this week had , forcing her to cook evening meals unassisted and making her stay in bed in the morning until he was ready to rise.
But her own book, Life Balance, painted a picture of marital harmony in which she set the alarm early to allow for some "personal space before the day begins".
And in a television interview the former model spoke of an agreement with Sir Paul that meant he brought her breakfast in bed while she prepared dinner.
The disclosures came as friends sought to rally round Lady McCartney.
Ms Gellatley hit out at suggestions that Sir Paul's estranged wife had a vivid imagination as a "fantasist", saying: "There has been a lot of media speculation about what kind of person she is and most of it has been completely inaccurate and written by people who have never met her.
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Ms Gellatley, founder of the animal rights charity Viva, called Lady McCartney a "lovely, warm, passionate person" with a "big sense of humour." She added: "She's got the ability to laugh at situations and herself."
Lady McCartney spent much of yesterday at the Holborn offices of Mishcon de Reya, where her legal team is attempting to find the source of the leak of her divorce dossier, which had not yet been submitted to the High Court.
The document with pages apparently missing was first faxed to the Press Association on Tuesday which declined to publish it.
The missing pages are said to be unfavourable to her, as she responds to Sir Paul's petition seeking a divorce on the grounds of her "unreasonable behaviour."
While their even before their marriage in Ireland, Lady McCartney's papers accuse her husband of grabbing her by the neck and pushing her over a coffee table, while drunk, and, in a separate incident, of pouring red wine over her and injuring her with the broken stem of a glass.
One passage states: "The Petitioner [Sir Paul] refused to allow the Respondent [Lady McCartney] to get out of bed in the morning even though she would wake up early and wish to use the time for essential physiotherapy for her leg and to attend to e-mails and administrative tasks before the staff arrived or their child woke up."
But in her self-help book, which was published in May this year, the 38-year-old wrote: "As a working wife and mother I have learnt that setting the alarm 30 minutes earlier each morning can make all the difference. It allows me a little bit of personal space before the day begins.
"I organise everything for breakfast the night before so that I can get it ready without a panic and we can eat together as a family."
In the divorce document, Lady McCartney also complains that she was "expected to prepare two dinners every night" one for their daughter, Beatrice, and one for Sir Paul.
She adds that he did not like her "to be assisted in the preparation of his meal" despite her disability, the loss of a leg.
However, in an interview with Michael Parkinson in 2003, Lady McCartney praised her husband for "bringing me breakfast in bed every morning, no matter how he feels. And I do the dinner, so we've got that agreement. It's thoughtfulness".
A source close to Sir Paul said last night that he was spending much of his time with his children, Stella, Mary and James, and, while angry, he was not "cracking up" or relying, as has been reported, on the help of a psychiatrist.
