Oh dear Slipperyfish, what a situation!
No wonder you're feeling all that you're feeling!
Some friends are "fair weather" friends - they only want to be in a friendship for the happy high times. But the tables soon turn when THEY are in need of support...
You're doing your best with difficult things.
Have you spoken to the Police Social Worker? I found mine the most amazing support.
She also helped link me in with other 'community' supports.
I found the Breaking Free Course offered via Women's Health Centres invaluable.
Your physical injuries need to be sorted, so I hope you're getting some headway?
The "training" I'd ask my psych for in your situation is to help me 'compartmentalise'.
Hopefully your psych is skilled in PTSD / trauma and can help you begin to diffuse the emotional attachment to the traumatic events via exposure therapy, CBT and / or EMDR.
It's really important to get specialised support for the PTSD so that this doesn't reign over your life until life becomes unmanageable.
There should be financial support available for your therapies due to you reporting to Police.
This may be available to you via Victim's Services in your state or territory.
Please come back and let us know how you're going.