Stay Hydrated, Homies
We’re all for distance learning, but we’re not exactly fans of teachers trying to tell students what they can and cannot do in their own homes. Sure, they have to sit tight and listen to you drone on and on about unimportant topics, but you can’t seriously expect your students to sit still for X hours, can you?
The OP’s little sister knows what we mean. She questioned how her teacher had the galls to yell at her for getting up and getting a drink of water in her own home. You don’t ask permission from mom or dad to drink, so why would you have to ask Ms. Busybody?