The correct option is 3) i.e. She was afraid guerrilla attacks would break out. Explanation Reading the passage carefully we find that:
The last three lines of the passage clear state " Margret sprang out of bed, and on her knees prostrate and prayed as if she had never prayed before, "Oh God! Please have mercy on Col James, even though we are on the opposite sides, please stop further bloodshed as this may lead to another round of guerrilla attacks by the defeated but enraged French forces".
Based on the above sentences the correct option is 3.