im not sure exactly if i can help or not...what i am getting from you is the girl is sucidal and the teacher makes her feel better and your worried that she gives up the idea of sucide to soon?? Well...let her be comforted by the teachers remarks with a remark on her inside feeling of something unsettling that may happen...then recreate her PTSD through certain flashbacks....and at certain times....and perhaps one attempt can force her to go to see a therapist to start? Its a pretty cliche idea on my part...but its just an idea you can start with at least to ween her out of the sucidial feelings?
When you write a story..if its fiction...remember act like your not writing it...devulge yourself into understanding your characters to the point where...they are as real as can be...for the girl...what do you feel she is like...you cant really just guess what she will do...you have to know....like you know your best friends....if your best friend was an optimist....and someone said ...oh i think she talks about people behind their backs...you can with a true heart say...oh i know her well enough,, she would never do something like that....the story is sketchy and it sounds like your going alittle to fast for yourself and your characters...what is really hard for some to grasp is their time concept is as long as ours....its not shorter just because its on paper...you have to be so connected to your story that if someone dies ...you cry....you feel their pain....thats why sometimes its not always very healthy for yourself to become a writer....lol but me ...i guess im a hypocrite..i need to speed things up...ive been working on a book for a while...lol but i havent written anything down....im still getting to know the main character roflmao...let me know how it goes....