What is the ruling on a working woman praying Fajr before its prescribed time due to work and commuting circumstances that prevent her from performing it at its original time?

Allah has set a time for each prayer, and prayer is not valid before its time begins. Consequently, the questioner's Fajr prayer is invalid because it occurred before the time began. She could have prayed on the bus according to her ability if stopping was not feasible. The majority of scholars obligate making up the Fajr prayers for the period she prayed them before their due time, while Ibn Taymiyyah and those who agreed with him hold that one who is ignorant of a condition or pillar is not obligated to make up what has passed.