Aaaawwwww, he wanted to pat them on the head to make them feel better <3
About the schedule: I see she wanted them to catch up but she forgot that the other imperial children had more time to learn the same amount of stuff. So the pacing was just wrong. They were doing 5 ppl's worth of work each. And they were expected to go from step 1 to step 5 without any gradual progression. Just BAM. While the other imperial children gradually went from step 1, to 2, to 3, etc.
Yes, the twins has less time but that's no excuse to skip the steps and dump everything on them all at once.