During the war, Maria and Anastasia also paid a visit to a nurses' school and helped to tend to the children. She wrote her father that she thought of him when she was feeding the children and cleaned the gruel running down their chins with a spoon. For a break during the war, Maria, her sisters and mother sometimes visited the Tsar and Tsarevich Alexei at the war headquarters in Mogilev. During these visits, Maria developed an attraction to Nikolai Dmitrievich Demenkov, an officer of the day at the Tsar's Headquarters. When the women returned to Tsarskoye Selo, Maria often asked her father to give her regards to Demenkov and sometimes jokingly signed her letters to the Tsar "Mrs. Demenkov".