Lorraine Green, confidant to Mayor Vincent C. Gray (D), is retiring from her 14-year career as an executive at Amtrak on April 1, but she said she has no plans to join the Gray administration.

Amtrak sent a memorandum to employees Friday that Green would be leaving her job as vice president of Human Resources, Labor Administration and Diversity Initiatives. "Lorraine has served Amtrak with dedication and passion, and I will miss having her here to turn to for advice," Amtrak President and CEO Joe Boardman said in the memo. "She has made enduring contributions to Amtrak for which we thank her, and she will be truly missed as she begins a new chapter in her life."

Green, who headed D.C. government personnel during the administration of Mayor Sharon Pratt, was the chairman of Gray's campaign and transition team.

She also previously served as deputy director of the U.S. Office of Personnel Management under President Bill Clinton.

Since Gray's election, Green's stature in local politics has been elevated. She is considered one of Gray's closest advisers, though she is not part of his administration. In recent weeks, the Gray administration has been criticized for hiring relatives of top aides, including Green's daughter.

Green said she will not join the Gray administration. She said if that was the plan, "I would have done that."

But Green, who has worked at Amtrak since 1997, said the announcement is about her retirement, not a new job. "It's a good place. It's a good time (to retire)," she said. "You're fortunate when you get to these milestones."