A brilliant mathematician, she has been an inspiration to so many. She will be sorely missed. Our condolences to her family and friends.
Her beautiful mathematics will stand as a memorial long after those of us who have had the privilege of knowing her personally are gone.
Various links with tributes and information on her life and career can be found on the EWM website here.
For a page of tributes set up by the AMS see here.
A very nice and informative interview by Erica Klarreich which appeared in Quanta magazine in 2014 is here.