It’s totally developmentally normal! Just keep setting that example for her, like offering to share whatever toy you’re playing with, talking about and demonstrating taking turns, etc. and eventually it won’t be such a big deal. You’re doing great!
Yup. It's no fun, and mine has an older sibling and still doesn't get it. We try to implement "taking turns". She just has to observe, experience, and get out of this phase 😆
I don't have this problem yet, but I've read that you can demonstrate sharing with your partner and encourage your child to share with you. We always share our food and I have taught my child to give me what he's holding since he often grabs things he shouldn't have (he takes butter knives out of the drawer a lot 😨)