Willa's still a little jumpy.

When he first asks them to raise their hands just for the '2, 4, 6' she suspects it's a trap, and writes just slowly enough to make sure she sees a couple other students raise their hands first. Turns out it isn't a trap?

2, 4, 6: YES

8, 10, 12: YES

Willa would ordinarily guess here, right away, if she hadn't just been admonished to be careful. But she was, so she stopped, thought for a second, and then-

-6, -8, -10: YES

3, 1, -1: YES

The law is that the absolute value of the number must cha- Willa crosses that one out, realizing something.

5, 7, 5: YES

And there's a triumphant expression that's too subtle for Keltham to see but not too subtle for any Chelish students that might happen to be looking at her.

The law is that the absolute value of the number must change by 2 each time.: WRONG

She experiences existential anguish, and then pauses in terror, expecting Asmodia to scream at her in indignation.

Willa's still a little jumpy.

When he first asks them to raise their hands just for the '2, 4, 6' she suspects it's a trap, and writes just slowly enough to make sure she sees a couple other students raise their hands first. Turns out it isn't a trap?

2, 4, 6: YES

8, 10, 12: YES

Willa would ordinarily guess here, right away, if she hadn't just been admonished to be careful. But she was, so she stopped, thought for a second, and then-

-6, -8, -10: YES

3, 1, -1: YES

The law is that the absolute value of the number must cha- Willa crosses that one out, realizing something.

5, 7, 5: YES

And there's a triumphant expression that's too subtle for Keltham to see but not too subtle for any Chelish students that might happen to be looking at her.

The law is that the the absolute value of the change of the number must be 2 each time.: WRONG

She experiences existential anguish, and then pauses in terror, expecting Asmodia to scream at her in indignation.