Group Work in French Class

Kethry (the girl who seems to have more mysterious illnesses than an encyclopedia) in French class;
Kethry: “It’s relantissent.”
I take out a text book to look it up.
Kethry: “I’m pretty sure it’s relantissent.”
I continue to look it up, find out that it is, indeed, relantissent.
Kethry: “Why do you guys think I’m wrong?”
Jenna and I glance at each other.
Me: “Well, we don’t know how it’s spelled so I’m just looking it up to be sure.”
Jenna: “Yeah.”
Kethry (snobbishly): “Well, I could try to not spell it in French for you guys.”
Silence.
Jenna and I exchange a glance.
Jenna and I both stare at her for a good minute, she starts to fidget a little.
Jenna makes a snorting/coughing sound into her fist, cocks an eyebrow at me, and and bends industriously over her paper.
I look back at Kethry and think: Well I’m sorry if I have some hesitations about entrusting my grade in this class to the knowledge of the girl who is absent more than half the time.