Possibly, when the time feels right for you, you could do that, and then ask the new psychologist if she/he could arrange a three way meeting with your mother and you to talk through the things that are not working for you at home and work out a plan that would help mum see your needs in a clearer perspective and perhaps learn new ways to support your move into more independence.
It seems to me that it will be too hard, or take too long, for you to try to achieve this by yourself, and the risk of trying to do that all by yourself is that you could become exhausted and more depressed - it's hard for any of us to make big changes without someone's support.
What State are you in (in Australia?) I know that some Australian states have an Office of Commissioner for Children and Young People and usually the staff who work at places like that know of a whole range of resources for young people in all sorts of situations.
Also, meantime, maybe you jot down a rough list of things that you would specifically like to do to expand your current life, and then from that maybe, the psychologist could help you develop some new plans, help you implement them, and the psychologist may know of other supports you could possibly use too. And there may be an asperger's support group that would suit you too, and would broaden your horizons beyond home, which is natural to want at your age.