Anne Smedinghoff had a quiet ambition and displayed a love of global affairs from an early age, joining the U.S. Foreign Service straight out of college and volunteering for missions in perilous locations worldwide.

So when the 25-year-old suburban Chicago woman was killed Saturday in southern Afghanistan — the first U.S. diplomat to die on the job since last year's attack in Benghazi, Libya — her family took solace in the fact that she died doing something she loved.

"It was a great adventure for her ... She loved it," her father, Tom Smedinghoff said Sunday. "She was tailor-made for this job."

Anne Smedinghoff grew up in River Forest, Ill. — a suburb about 10 miles west of Chicago — the daughter of an attorney and the second of four children. She attended the highly selective Fenwick High School, followed by Johns Hopkins University, where she studied international relations and became a key organizer of the university's annual Foreign Affairs Symposium in 2008.

Those who knew Smedinghoff described her as a positive, hard-working and dependable young woman.

Her first assignment for the foreign service was in Caracas, Venezuela, and she volunteered for the Afghanistan assignment after that. Her father said family members would tease her about signing up for a less dangerous location, maybe London or Paris.

"She said, 'What would I do in London or Paris? It would be so boring,' " her father recalled. In her free time, she would travel as much as possible, her father said.

Smedinghoff was an up-and-coming employee of the State Department who garnered praise from the highest ranks. She was to finish her Afghanistan assignment as a press officer in July. Already fluent in Spanish, she was gearing up to learn Arabic, first for a year in the United States, then in Cairo, before a two-year assignment in Algeria.

Secretary of State John Kerry said Sunday in Turkey that Smedinghoff was "vivacious, smart" and "capable." She had assisted Kerry during a visit to Afghanistan two weeks ago.

He also described her as "a selfless, idealistic woman who woke up yesterday morning and set out to bring textbooks to school children, to bring them knowledge."