Hempel was born in Brzeziny, the daughter of Aleksander Klemens and Maria Klemens (née Bogdanowicz).[1][2][3] In 1857, she became engaged to her cousin, Kazimierz Łapczyński, an engineer who was also involved in the study of botany.[4][5] That same year, Hempel's mother died, necessitating Hempel to begin caring for her younger siblings.[4]
Hempel was involved in the Polish patriotic movement against the Russian occupation of Congress Poland, part of Poland which was under the control of Russian Empire. She was a member of the Chełm Women's Committee, and during the January Uprising in 1863, Hempel acted as a courier and intelligence officer, and helped to supply and hide insurgents.[1][6][7]
Until 1875, Hempel lived in an estate in Tarnów.[8] After the home was sold, she stayed with various relatives and friends, helping them to run their households, including in Słupia Nadbrzeżna, Skorczyce, Nadrybie, Samoklęski and Węglin.[3][6]
Hempel died in 1904 in Węglin, and was buried in the cemetery in Rzeczyca Ziemiańska.[1][3] In May 2023, the Lublin branch of the Institute of National Remembrance renovated Hempel's tombstone, and her grave as added to the Register of Graves of Veterans of the Fights for Poland's Freedom and Independence.[9]
