She is just about avoiding putting her head in her hands in sheer overwhelm.

When I look at you baby
I see a shining star
But when you look in the mirror girl
You don't know who you are
You don't believe in yourself
For everything you do
Look at all the blessings
And what you have
You are beautiful and wonderful
Incredible and vibrant
Like such a spiritual miracle
Disguised angel
The way you love is a metaphor
It excites me
I can stay with you
How beautiful you are

"How do you know so many songs?"

"I have a good memory for music? Anyway, that's only three songs. --Probably we should head back before Jiang Cheng starts worrying that we've descended into the pits of degeneracy."

... She did just get serenaded in a corner there, didn't she. (And she sure is getting some Looks from the Chang'an table. Woops.)

"We probably should."

"Unless you want to descend into the pits of degeneracy, of course, in which case I'm sure something can be arranged."

"...I probably shouldn't."

He starts walking back. "Well, plenty of time to change your mind."

!?!

Wei Wuxian notices none of this.

"Showoff."

"You love me."

"It is impressive."

"Si-mei is just as impressive. Did you know--"

"No, and I don't want to."

That's valid.

"Have you gotten to do a dissection?"

"I got to dissect a bull's eye once."

"Cool! Jiang Cheng and I used to sneak out of the enclave and find roadkill to dissect."

"And dead birds."

"Cool."

(They are getting some Looks now.)

"I have two of the signs that someone is going to be a serial killer!"

"Three."

"Fuck you."

"I mean, getting to learn anatomy is pretty cool."