Even women (and others born through the womb of sin) can reach the highest path.

They who take refuge with Me, O Partha, though of the womb of sin, women, Vaishyas, even Shûdras, they also tread the highest path. 9:32

When women become corrupt, the caste system breaks down, which drags people to hell.

Owing to predominance of lawlessness, O Krishna, the women of the family become corrupt; women corrupted, O Vârshneya, there ariseth caste confusion; This confusion draggeth to hell the slayers of the family. 1:41-42