This happened right after Lily's Nightmare.
Doris: Boris Anderson, how dare you ground Lily?!
Boris: But Doris, I grounded her because she got ungrounded by Gelman from Recess and I don't trust him at all.
Doris: I don't care! Just because Gelman is a troublemaker doesn't mean you should ground your bundle of joy after she is ungrounded by him! You are grounded grounded grounded for 12 days! Go to your room right now and don't come downstairs until you're ready to apologize to Lily!
Boris (running upstairs): Fine!