Cole's mom got sick because she was in shintaro with the geckles and munce for way too long and got overexposed to Vengestone. Normally in small amounts or for short periods of time it just gets an elemental master a little queasy, but Lilly was in an environment with a lot of it for who knows how long. The ninja actually all get pretty sick after Master of the Mountain (and zane starts glitching) and Cole basically has a mental crisis because he recognizes the symptoms a little too well
MY HEART. MY VERY ANGSTY HEART. When the others began to feel symptoms, he had a panic attack in his room. Wu found him crying.






