Dont let her win dont come back she’s following her smarts she’s screams you come after a while she will realise that wont work

That’s pretty normal around that age. I remember we played lots of peek-a-boo type games and made it a bit fun so my daughter wasn’t as stressed about me “disappearing” to the toilet or bin, etc. I think it’s a concept called Object Permanacy, which means understanding that things we love or people we love may disappear, but they can come back, they’re aren’t gone forever, which is what your bub is currently thinking when she can’t see you. If you haven’t already, grab The Wonder Weeks app. It has suggestions for tackling this issue.

Try walking away of a day, leaving child with someone else that she knows. Yes she will scream but keep on walking until you can no longer hear her. Baby will settle with the other person and usually in no time at all. As child care worker I seen this happen with majority of babies and children when the parent dropped them off. Within 15 minutes baby/child was settled and playing happily.

Dont give up mumma bear. Its hard when your child is only 11 months old. But my son was similar when i put him to bed (only at bedtime). He was 11 months at the time as i was due with my second 2 months later i thought id better do something about trying to sort out the issue. I did the ignoring part. Letting him cry. Was so very hard and draining for me listening to him scream, i would resettle him every 15 mins. Some nights it took over 5 hours. Only took a couple of weeks for him to change the rountine and get used to it.
I know im a little off the topic, but persistent, and you will finally be able to walk away from your daughter without her screaming. Another is let her know before walking out the room that you will be right back.