Gabapentin in Australia

Could I be prescribed it 

I've tried every non scheduled anti anxiety, deprressent and antipsychotic that can be prescribed and the next step is xanax and that but before that I was talking to my doctor about Gabapentin because it can help anxiety depression and bpd which I'm diagnosed with

She asked for a detailed description of all health and mental issues wich included moderate to severe back and neck pain, muscle spasms and pain for tonsilitis and the aforementioned mental disorders she's now referred me to a specialist for these issues and someone that could perscribe these substances due to me being under 18 

So what should I tell the specialist and what might be the best drug because I'm also doing ongoing therapy but we've hit a dead end due to all ssri anti anxiety and antipsychotics not working so what should I say what would best be prescribed I also have heavy nerve damage from cutting