I'm not from your area so I'm not familiar with what a "job developer" is. Can you explain what they do? Are they to support you with anything related with employment like, skill development, job requirements, communication, etc? I'm assuming this person knows you have ASD.. so, it may be that your worker does not have a firm understanding about this disorder.. perhaps underqualified which is sadly common.

Does your manager at McDonald's know about your ASD? If so, telling a staff member to "shut up" is not only crossing professional boundaries and completely inappropriate... saying so to a person with a known condition is discriminatory. If they are aware, you can report this person. It sounds as if she took your comment personally and is holding a grudge. But again, it's helpful if they're aware about where you're coming from.

Many people on the spectrum say things that sound rude. To be rude would require some level of awareness. So no, I don't think you were rude. I think what you said unknowingly came off rude. Social skills training in the workplace could be beneficial to you. Also learning about boundaries, roles in departments, etc can be helpful. Does your "job developer" help you with this?