Marie Stevens was bitten on the legs and arms by two rottweilers in Netherton, Merseyside, on 18 August.
The 40-year-old died on Sunday 3 September after collapsing at home, police said.
Officers were called to her address on Holden Road in Brighton-le-Sands by the North West Ambulance Service shortly after 9.10am.
A post-mortem identified the primary cause of death as a pulmonary embolism.
Police said last month’s attack was reported on Park Lane West in Netherton.
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Officers at the scene gave Ms Stevens first aid until the ambulance arrived.
She was treated in hospital and later discharged.
A 41-year-old man and 68-year-old woman were arrested on suspicion of being in charge of a dog dangerously out of control causing injury.
The pair have been bailed with conditions.
