And the unconventional apprenticeship continues to be productive, if not any more conventional.

Eventually Marille's sister shows up to see how she's doing.

She'll find a workshop partitioned so heated debates don't distract the people working elsewhere.

They have those a lot? Cool. ...Is her sister engaging in one such that she should probably not be bothered right this minute?

Actually yeah.

Good for her. Ahyadacil can loiter around for a while until she's probably done.

It's a pretty house! There's a courtyard, there are kids dangling from the trees, there's an adult sleeping next to the fountain with his giant dog. 

Oh, wow, that dog is giant. Neat. And the guy is pretty.

...She can think of a way to make him prettier. No, she shouldn't do that.

But he's just lying there asleep and looking so cute and tempting and okay she's going to walk carefully over there and balance a vial of glittering powder on his forehead.

She offers her hand for the dog to smell.

She gets sniffed. Suspiciously.

Okay, she has no reason for a strange dog to trust her. She sits down a respectful distance away.

Huan plods over and sniffs her less suspiciously.

Oh, cool. She holds still and lets him do that.

After a minute he seems to get bored and slouch off back to his sleeping person.

Okay, that's fair.

She watches the small children hanging from the tree and waits for her sister to be available (or for sleeping person to wake up and dump glitter all over himself).

The latter happens first! He stands up and blinks and is very very glittery and looks around in confusion and then says to the dog, sounding intensely betrayed, "you could have warned me."

(She makes a token effort to conceal her laughter. It's not really very effective at all.)

He notices her. He glitters at her. "You could also avenge me," he says pointedly to Huan.

"And where is he supposed to get glitter to do that with?"

"Dunno, where'd you get it?"

"Yes, because I'm totally going to give people the secrets to avenging themselves upon me."

"Are you imagining me that easily deterred from vengeance?"

"No, but I don't have to make it easy for you. I am a high-quality vengeance-receiver and I demand effort from those who would avail themselves of my services."

"It seems unwise to suggest that I put more effort into my revenge when you have no idea what form I intend it to take."

"Just remember that the vicious cycle of revenge is an escalatory one and I'll have to top it if you come up with something really good."

"I am sure you'll try."