Gu Mengmeng really wanted to stay behind to comfort her son but after Elvis's way of 'educating' Kanwu just now, it was very disadvantageous in terms of education to comfort him at this moment. The kid would assume that he had his Mother's backing and would continue to doubt and provoke his Father's authority. Especially in this Beast World where female rights were extremely psychotic, her actions might make Kanwu become someone who had no respect for anyone.
Although she could not consent entirely to Elvis's hegemonic education, what she could not deny was that abilities meant everything in this Beast World where law did not exist.
It was either win or defeat, there was no third route left.
Peace....
Ha, after experiencing so much, if she still wished for everyone to reach a common consensus after a series of debate at the meeting table, she would not be so simple-minded anymore, it was just plain dumbness!