Kaczyńska attended primary and secondary schools in Rabka Zdrój in southern Poland. She studied transport economics and foreign trade in Sopot at what is now the University of Gdańsk.[5] After graduating in 1966, she worked at the Maritime Institute in Gdańsk, where she met Lech Kaczyński in 1976. They married in 1978,[5] and had a daughter.[5] In addition to her native Polish, Maria Kaczyńska spoke four languages such as English, French and some Spanish and Russian.[5]
On 10 April 2010, 10:41 MSD (06:41 UTC), Maria Kaczyńska, and her husband, Polish President Lech Kaczyński, both died when the Polish Air Force Tupolev Tu-154M they were aboard crashed while attempting to land at Smolensk-North Airport in the Russian city of Smolensk. All 89 passengers on board and the seven crew members were killed.[7] The Kaczyńskis were traveling with several senior government figures on a trip to mark the 70-year anniversary of the World War IIKatyn Massacre, where thousands of Polish military officers were executed by the NKVD.[8]
She was buried along with her husband on 18 April 2010 in the Wawel Cathedral.[9] Her diary was found by her daughter after her death, sparking an interest among many publishers who desired to buy it and release it. However, Marta Kaczyńska-Dubieniecka said the diary was too precious for her to sell and also explained that she was not likely to reveal its content.[10]