Gu Zhenkang was the head of the family and he should be in charge of almost everything at the mansion, but Mrs. Gu wanted to get involved with Madam Gu's funeral, and she needed the others to obey her.
She was not countering Gu Zhenkang because of the position Ruxue and Yunhe were in.
For example now…
Mrs. Gu did not decide to give up.
She glared at Gu Zhenkang and said, "Which part of the funeral is improper?"
"…"
"The rules of the Saint Divine Land are that old people, when they pass away, should have a huge funeral, because it is a fortune that they pass away at a high age."
"…"
"Your mother's sickness is known to the whole capital, and everyone knows how she got a stroke because of Princess Gu!"
"…"
"Anyone who knows the rules would have the funeral arranged in low-profile!"
"…"
"I mean we can keep the funeral simple, for Gu Mansion's future, and for Ruxue and the Heir's sake as well!"
"…"