Mum, I 'm scared!

My daughter told me last night that she was scared of seeing zombies in some playgrounds. She wanted to forget it but what bothered her was that she couldn't. (clearer this way) 

I feel that it is better to face it than try to forget it. So we analyzed why zombies scared her, and how the staff created a frightening atmosphere.

(i is not clear what you mean by staff [员工]. You mean staff of the playground ? Or did you mean stuff [东西])

We compared zombies and specimens (or "exhibits" is a better word for museum display items) stored displayed in the museum of nature (which is she is not afraid of). I think she may have felt better after we talked about it, but I'm not sure if I helped her get rid of this terrible memory image  (or fear).
Maybe we can make a zombie using ultra-light mud clay (more common term for us is "modelling clay" ). Then we will observe it respectively in a bright, dark, and twinkling environment. After that, we will try to recreate the terrible scenes of the playground so that she can see it clearly and realize that it is nothing to be afraid of. (clearer with this)
I hope this method will work.

"Ultra-light mud" is not a common term for us. We usually call it "modelling clay". Clay is the red sticky mud used to make pots and ceramics. Lucky my children are all grown up now  :-)