Sonja Kaygan died without family or friends near her on Friday morning after spending more than two weeks in intensive care, her cousin Sherrihan Afifi told news media outlets .
She also had bronchitis but it is unclear whether she had bronchitis before contracting Covid-19, she said.
More than 14,000 people have now died with coronavirus in the UK.
Ms Kaygan was described by her mother Ayse Mehmet as a “beautiful angel” in a post published on Facebook.
She was “a very gentle, caring, family-oriented person who had a strong character and loved her daughter more than anything”, Ms Afifi said.
Ms Kaygan’s three-year-old daughter will be looked after by her grandmother.
Ms Afifi said her cousin, who lived with her mother and daughter in Enfield, started feeling unwell with a cough in mid-March, and began struggling to breathe towards the end of the month.
An ambulance took her to hospital on 31 March, Ms Afifi said.
She added: “When Sonya was about to go in the ambulance she was crying and pleading with her mum to please look after her daughter.
“It’s so heart breaking. It’s like the girl knew it was the last time she’d see her mum.”
Care UK, which runs the Elizabeth Lodge care home, where Ms Kaygan worked, said it was “deeply saddened” by her death.
Its regional director Deliana Katsiaounis said: “I would like to offer our sympathy and condolences to her family.
“She was a much loved member of the care team who treated residents with kindness and respect.”
Enfield Council leader Nesil Caliskan described her death as “incredibly sad”.
In a post published on Twitter, Ms Caliskan said: “She was a care worker in an #Enfield care home, looking after our most vulnerable residents.”
Ms Kaygan moved to London from her home in Cyprus to be closer to her mother and to have a “better life” about three years ago, Ms Afifi said.
A GoFundMe page raising money for her funeral and the care of her daughter has so far raised more than £10,000.
This article first appeared on BBC News website