Hawthorne wrote:
No she doesnt trust me with anything
Before my Dx she trusted me alot
But after my Dx she stopped trusting me
Have you pointed out to her that she trusted you a lot before the Dx? I would make a list of things that she trusted you with before the Dx. Show it to her and then say something like "Mom, you trusted me with all of these things before the Dx. I'm still the same person now that I was then -- a diagnostic label doesn't change who I am."
If that doesn't work, ask her to tell you exactly what she is afraid will happen to you if she lets you walk to the bus by yourself. If you know exactly what she is worried about, it might make it easier for the two of you to work something out.
I also think Callista had great advice. If she thinks that people with autism can't show responsibility and maturity, you might make a lot of progress with her simply by proving her wrong. Every day, make yourself a list of chores and other things that you have to do. Then get those things done. I know it probably seems unrelated but the point of this is to prove to her that you are responsible and can handle your affairs. If she sees that, she might start trusting you more.
It does sound to me like she is being unreasonable but, if she is like most NT, she probably knew almost nothing about autism before you were diagnosed. For most parents, that can be very frightening because they don't know what it means. They don't know if someone with autism can have a good life. Dealing with the diagnosis may be something that is very new and frightening for her. The more responsibility you can demonstrate, the more it will prove to her that you CAN be trusted.
If the diagnosis was recent (say, within the last 6 months or so), she will probably learn to trust you more when she has had more time to learn about autism.