Police named the victim as Andreea Cristea, a Romanian national who was visiting London when Khalid Masood, 52, drove a car into crowds on the pavements of Westminster bridge.
Ms Cristea, an architect who was reportedly in the capital to celebrate her boyfriend's birthday, plunged into the Thames during the attack.
It is not clear whether she leapt into the water to escape the violence or if she was thrown from the bridge as part of it.
"After fighting for her life for over two weeks, our beloved and irreplaceable Andreea – wonderful daughter, sister, partner, dedicated friend and the most unique and life loving person you can imagine – was cruelly and brutally ripped away from our lives in the most heartless and spiritless way," said Ms Cristea's family in a statement.
"She will always be remembered as our shining ray of light that will forever keep on shining in our hearts."
/The Independent/
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