Maria Haecki was born in Engelberg, Switzerland on June 29, 1875. She entered at Clyde on Sept. 19, 1901 and was invested on Jan. 23, 1902. On April 21, 1903 she professed temporary vows as Sister M. Idda, and made perpetual vows on Jan. 13, 1912. 

Sister was a quiet, refined person, well educated, and knew both German and French well. She also had a beautiful penmanship. So that there might be someone capable of writing to the Polish correspondents, of which there were many at the time, Sister was sent to a Polish convent in Milwaukee to learn the language. She picked it up in a comparatively short time and thereafter took care of the Polish correspondence and also wrote German letters.

Charity, humility, prayerfulness and fidelity were among her most characteristic virtues, especially fidelity in 'little things.' For many years she performed the charitable duty of distributing the mail to those in the infirmary and seeing that the clippings, letters etc. read at table were received by all, even when her physical condition made it hard for her to get around. 

She died on December 20, 1947, at the age of seventy-three.