Do you yell at your children to go to sleep?

My boyfriends sister yells and screams at her 2 year old to go to sleep almost every night and I can't help but feel bad! I know by now he should have a schedule and shouldn't be up at 11 or midnight but I feel bad when she tells him "THIS IS RIDICULOUS!"

"WHY CAN YOU UNDERSTAND YOU NEED TO SLEEP" and just yells and yells :( I don't want to be this way with my baby.

What do you think?