Ethel

Ethel was an aunt of Kim Bauer. While at Rick Allen's house, Kim tried to reach her on the phone, but was unsuccessful.

[edit] Background information and notes

It is unclear whether Ethel is from Jack's side of the family or Teri's. Considering she was not mentioned during Jack's reunion with his father and brother during Day 6, it seems likely that she's from Teri's side.