"Young Lady Pei had previously entered the palace to learn some etiquette, but unfortunately she was too busy back then and learned only a little before stopping. Now she has some free time and has asked the Empress for permission to enter the palace to learn etiquette with Nanny Gui. What a coincidence, she can accompany the Princess."
The lady official spoke quite eloquently, suggesting that Young Lady Pei wanted to learn palace etiquette herself, rather than being specially invited to accompany her. Otherwise, Princess Zhuyu might feel pressured.
Nanny Gui listened and said nothing, clearly understanding the benefit of presenting it this way.
Princess Zhuyu is simply too sensitive, unable to endure any stimulus. With the event approaching, it's better to indulge in a few benign lies.
