The second line, being yin and yielding, resides in the era of Difficulty at the Beginning. Although her proper correlate is above, she is pressed closely by the firm initial line; hence she experiences the distress and wavering described in the text.
'Mounting a horse' means desiring to go forward; she desires to follow her proper correlate, yet again hesitates (ban ru) and cannot advance. Ban carries the meaning of dispersal; dismounting is ban, parting company from the horse.
In this era of Difficulty at the Beginning, although the second line cannot save herself by her own power, she resides in the center and attains correctness, with a correlate above, thus not losing righteousness.
Yet being close to the initial line, yin is what yang seeks, and the yielding is what the firm encroaches upon. When the yielding encounters Difficulty at the Beginning, it is inherently hard to deliver oneself, and being pressed by the firm yang, difficulty arises.
Were she not pressed by the adversity of a bandit, she would go to seek marriage. 'Marriage' refers to the proper correlate; 'bandit' refers to that which arrives contrary to principle.
Six in the second place holds to the center and correctness, refusing to unite improperly with the initial line; this is why she does not betroth herself.
If she remains chaste, steadfast, and unswerving, then after ten years, when difficulty reaches its extremity, breakthrough must come; she will obtain her proper correlate, be betrothed, and bear children.
If even a yielding, yin maiden, by holding firmly to her resolve and chastity, is sure to find breakthrough in time, how much more so the noble man who holds unswervingly to the Dao!
Why would the initial line, being a worthy, bright, firm, and upright person, act as a bandit who encroaches upon others?
The answer is: this meaning is drawn solely from the perspective of the second line being yielding and close to the firm, without regard to the virtue of the initial line. Such is the way the Yijing derives meaning.