Song Zi is not foolish. With Song Lingsu's family background and character laid out there, she naturally knows that he is a perfect match chosen from thousands.
But she also knows that there are countless people eyeing Song Lingsu, and their family backgrounds are by no means comparable to the Lin Family.
Just think, if Song Lingsu had better choices, why would he choose a mere Assistant Governor's daughter?
Even if he was willing, what about his parents?
Madam Song, coming from a prestigious family, is a person with the highest standards. You can tell just by the way she selects a son-in-law.
The wife of the eldest son must be carefully chosen, someone who can shoulder responsibilities and handle the duties of the main lady of the family.
Lin family's daughter does not qualify.
Thus, Song Zi never entertains unrealistic dreams; the idea of cousins marrying to strengthen familial ties might be feasible but is impossible for Zhihui in her family.