"She never really showed those times that she was depressed about her disease," Hanafin said. "She fought her condition with a sense of humor that always amazed me."

Mullin had written a work of non-fiction, entitled The Stones applaud, describing her own struggle with cystic fibrosis. While the book has not yet been published, her father said he plans to make sure that it eventually goes into print.

Edward Mullin said that Terri had planned to go on a speaking tour for the book, the name of which comes from a collection of Northern Irish poems. Both the book and the tour were intended to raise awareness about cystic fibrosis and its sufferers.

"She wanted very much to help fellow cystic fibrosis sufferers," her mother said.

Her parents plan to set up a memorial find in her name to assist undergraduates here at Harvard, her mother said.

Mullin is survived by two brothers Ted, 18, and Timothy, 6, and two sisters, Susan, 15, and Elizabeth, 7.

Funeral services will be held at the St. Thomas more Church in Allentown on Tuesday at 11 a.m. The wake will be held in her parents' home on Monday evening.