By The Associated Press

CHICAGO - Former U.S. Representative Jesse Jackson Junior's wife has resigned from the Chicago City Council.

Chicago Alderman Sandi Jackson said she's stepping down because she can't adequately represent her South Side ward while she deals with ``very painful family health matters.''

Her resignation is effective this coming Tuesday. Jackson Junior resigned from Congress in November. He had been on medical leave for bipolar disorder for months. He cited his health and acknowledged he was
under federal investigation.

Alderman Jackson said in a letter to Mayor Rahm Emanuel that she's stepping down even as she values the public trust that comes with being on the council, she suggested that she needed to devote herself to her husband and their children.

Jackson called her election in 2007 as alderman of the city's 7th ward a ``profound honor.''

Meanwhile, Jackson's father-in-law, the Reverend Jesse Jackson said he did not know anything about the resignation.