Please remember, that these are just my thoughts and opinions. Since you submitted this story for honest reviews, I am going to be as honest with you as I would like anyone to be with my work.
First of all, I think that you need to read over and work a little more on the flow of the story. I noted a few of the places I feel you could work on.
- It seems impossible that amongst a group of twenty educators, she should have only two friends. Who does that? (the bolded part seems out of place to me or rather, a different choice of words eg, Pathetic!, will bring out whatever idea you want to express better)
-“What a great person she is, looking after other people’s children and taking her as their own, at her young age, and on top of her own two teenagers.” There is a kind of disjoint here. I think you should rephrase it to make it clearer to the reader.
- the next day Jessie takes her seat next to Denise, who squints at her from under long black lashes. “Don’t ask. I did nothing. Nothing.” Sammy takes a long drink from her coffee. “How did it go with your grading?”(I am wondering where they are now)
-No one responds He regards that as affirmation.” (Please check the punctuation)
On the whole, I think it has the potential to be a great story. It just needs a little more editing.