Grandma Bai was aware that she had done something wrong, so upon hearing of Li He's death, she returned to Beilin that same day.
She wasn't a wicked person, just stubborn.
Zongzheng Si had a marital engagement with her granddaughter early on, and Li Susu aggressively snatched the love away; the Zongzheng Family broke faith and betrayed, so her demanding justice wasn't wrong.
She just never expected it to result in a death!
Old Master Bai realized the gravity of the situation and had his wife stay home to avoid the public eye while he personally visited Imperial City.
But Huo Sichen did not give him a chance to see Li Susu, exhibiting a strong, almost callous attitude.
Although the two families had set the marriage years ago, Old Master Bai had met him only once or twice, and that was many years ago.
