I have Kate’s niece as Lillian May Lane Rafert ( 1879-1940) . Lillian’s mother was Kate’s sister, Rosalia. Her father, Ephriam Lane, died in 1879,same year Lillian was born . Rosalia married two more times, John Elphinstone then Frederick Bruchmann. Lillian’s husband was Alonzo Rafert ( 1873-1925).
Lillian, Alonzo and Rosalia are buried in Denver, Colorado.
All I know is that Kate's niece was named Lillian Rafferty and she is who Kate is supposed to have written the letter to. Here are some archived posts on the letter.
Rafferty or Rafert ? — Robert Buckley,Sat Dec 25 22:36
Robert, I think I found where "Rafferty" got put into the mix:
Gary Roberts cites "Raffert" with two f's in his Do... more
If there is any truth to the story of her, Kate, observing the shoot-out from Fly's boarding house window, depending on her shaky relationship with Holliday...why would not the Defense want her for a ... more