Lex was not any stupider than Saleen. It was just that she had not had a real childhood, hence she felt distant when toys were used as an analogy. However, she immediately understood the meaning when Saleen explained it to her.
The creatures in this interdimensional space seemed to have been manmade. The interdimensional space was desolate, and there was no day or night. Also, the volcano erupted from time to time, causing the sky to be permanently overcast. A person's psychological state would be adversely affected in such an environment, and this mage, who had been a grade higher than Grade 7, had possessed abnormally high expectations for all of these disappoints.
