Six in the Second is the second line of Progress, a yin line in a yin position (properly placed) and holding the center. 'Progressing but with sorrow' describes advancement accompanied by worry — perhaps the promotion is coming but hasn't been confirmed, or recognition is near but uncertain.
'One receives this great blessing from one's grandmother' — the recognition comes not directly from the top authority but through an intermediary, a wise elder figure. In modern terms: your advancement may come through a mentor, a senior colleague, or an indirect recommendation rather than a direct appointment.
As the card depicts — a venerable elder bestowing a blessing upon a younger figure. The path to recognition runs through those who can vouch for your character and ability.