And she waits for the specific summons.

...takes a while.

...she sure hopes he didn't change his mind because the sheer number of lives lost if he did...

It's an hour and a half later and then she is back in his office.

She had pretty much given up by then so she looks extremely surprised and relieved when she appears in the circle. "Thank you."

Sigh. "You're welcome."

"What—took you?"

"I wanted to call Savo first."

"Oh. Did he believe you?"

"It took some time. Fortunately I'm not given to juvenile pranks."

"And is he expecting me?"

"Yes."

She nods. "...the binding means I can't leave this circle until you and I agree on a task and payment. It can be symbolic, like, you could give me the task of clearing this circle in exchange for being told your last name."

"My what?"

"—you don't have that here? Back in my world many cultures have the concept of a name other than the given one to further identify someone."

"You want my parentonymics?"

"—sure, or something equally innocuous."

"All right. Will you please clear this circle and I will tell you my matronymic."

"I accept this deal." The circle is cleared.

"It's be-Mavka."

"Thank you. Can I do anything else for you?"

"I can't really think what."

"Okay. I'll show myself out, then."

"I'd recommend going with a normal hair color. If you can do that."

Sky blue. "Does this work?"