The conflict between Shay Powers and Arlene Takahashi started sometime before (You Drive Me) Crazy

Conflict History

Season 14

In (You Drive Me) Crazy, Shay, Lola, and Frankie are both picking on Arlene. They throw crumbled paper at her, make pictures of her, and call her names, but Arlene doesn't seem to mind about it. In the end of the episode, Shay and Lola are throwing crumbled paper at Arlene. Shay asks Frankie to join with them, but she decides to sit with Arlene.