She fought in 12 bloody battles in Bulacan, including the famous Battle-of-Biak-na Bato, and would often get wounded but she would always return to the field after she recovered
At one time, when the Katipuneros lacked firearms, she went with three companions to the courthouse in Caloocan, Rizal and succeeded in subduing the civil guards and seizing their guns.
After this, she led a group of five men and proceeded to the jail in San Isidro, Nueva Ecija, where she was able to capture seven more firearms after subduing the jail guards.
She was likened to “Tandang Sora” or Melchora Aquino, who was called “Mother of the Katipunan” for her heroic role of feeding and nursing wounded Katipuneros in the battlefield.
The Katipuneros’ hideout in Biak-na-Bato also served as the headquarters of General Emilio Aguinaldo. It was Aguinaldo who called Tecson as the “Mother of Biak-na-Bato.”
Tecson was also cited as the mother of the Philippine Red Cross, in recognition of her nursing services for fellow Katipuneros.
During the Philippine-American war, she joined the revolutionary forces led by Gen. Gregorio del Pilar. She also served in the Malolos Republic and was designated as the Commissary of War.
Tecson died on January 28, 1928 at the Philippine General Hospital at the age of 80. She was buried at the Mausoleum of the Veterans of the Revolution in Cementerio del Norte or Manila North Cemetery.
