Good job.
You have a great imagination.
I will offer some ideas:
Take your time developing your thoughts, they do seemed rushed. Open up the prose a bit. Where,what, when, how.
This story is a cerebral piece-where we are in the head of the young girl. I'm not sure that she would be saying much out loud in a situation like this . But her internal conversation could be incredible. Give it to us- we want to be as frightened as she is.
The creature is good but it didn't work for me to switch from her point of view to its point of view at the end. Only one guys opinion.
Keep writing.

it just keeps getting better.
Penny