"And, um, she asked me to be her assistant," Ylva says, looking away. "To go to the standing stones for her. And -" she looks up, pleading in her eyes, "and I want to do it! I know you don't want me to travel but I'd come back a lot! A whole lot, because we need you to look after the magic thing."
Mathea blinks. "What?"
"Magistra Colle will be working in Magister Inric's home so she can stay safe," Ylva explains. "There's a magic thing that takes you there. It has to be kept safe."