Police identified her on Thursday as 37-year-old Gina Tiberi.
She was one of four people shot when a gunman opened fire on North Adams Street on the afternoon of March 24.
A 19-year-old and a 21-year-old died shortly after the shooting.
Tiberi was initially critically wounded along with a 36-year-old man.
Authorities have not announced any arrests or a possible motive.
Anyone with information about this incident is encouraged to contact Detective Brendan Shea at (302) 576-3649.
You can also provide information to Delaware Crime Stoppers at 1-800-Tip-3333 or Delawarecrimestoppers.com