On 10 March 1901, she died, at 2030 E Huntingdon Street, Philadelphia, Pennsylvania, of phthisis pulmonalis. On 14 March 1901, she was buried, in New Cathedral Cemetery.
Philadelphia Pennsylvania, death certificate #19279, Kate Kennedy, 10 March 1901, FamilySearch
death notice, Kate Kennedy, Philadelphia Inquirer Tuesday 12 March 1901, page 14, GenealogyBank
'KENNEDY.—On March 11 1901 Kate the wife of Robert Kennedy and daughter of the late James and Mary Ann McWilliams, in her 27th year. Funeral on Thursday at 8 30 o clock from 2130 East Huntington street. High mass at the Lady of Visitation Church 10 o'clock. Interment private, at New Cathedral Cemetery.'