Yes some of it may be PTSD but most likely not all of it. you have a woman that for years has been able to take complete care of herself and raise a child now has to depend on that child for help.

Being handicapped I can tell you sometimes feeling helpless and unable to do things that normal people can so is very irritating and frustrating and sometimes you just want to lash out at those trying to be so helpful. Many times I have fallen to have people start rushing at me with "here let me help you" "are you al right" and I have yelled at them yes Im fine leave me alone I can get up faster if you just back off. Im not hurt now move. My friends have all learned to wait for me to ask for help otherwise they may be trying to help where I need no help.

she needs space now to figure out how to manage her new life as someone whos leg got shattered by a car. Wait for her to ask for help and let her try to do things on her own a bit and she may become more agreeable to be around.

she is a different person now then she used to be, mentally and physically. right about now she has probably has her fill of rehab up the you know what and where. After a year of rehab and hospitalizations she knows she is not ever going to be the same phyiscally that she used to be. Give her time to adjust to this idea.

Maybe seeing a mental health therapist may help but that has to be her choice of wanting to go.

I know you miss the way she used to be and no amount of therapy and rehab is going to bring the person she was before the accident back to you. You are going to also have to find a way to accept her the way she is now and how and who she becomes in the near future and let go of how things were before the accident. A therapist can also help you heal in this too and help you to accept her as she is now instead of looking for the past "her". that person she used to be is gone, now is what you have and the future is what you have.

Hang in there