I need advice please?

I started a new job overnights, and I know I’m new but a girl is being overbearing, she’s nice at times but can be moody. I feel like have to walk on eggshells, this is my third weekend on my own and I work in a home.

I’m just wondering what are some ways to be assertive, so she understands that I don’t take shit from anyone.

I don’t want to be taken advantage of, and I’ve made mistakes.. I’m human.

I wouldn’t let someone be rude, but I don’t want anyone taking advantage of my duties.

What are some ways?
I need advice please?
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