My daughter with Aspergers

I'm after some advice. My daughter is 19 and has been diagnosed with Aspergers. She has a small part time job on the weekends at our local supermarket. They're not being very supportive with her and, cutting a very long story short, it's to do with a disciplinary meeting they want her to attend with regard to some time off she had which they weren't happy about. She'd been off work with depression that was partly down to them and had to see an occupational therapist who, after seeing her for 30mins, decided she was fit enough to attend the meeting. Now,  they're trying to force her to attend a formal meeting about this holiday and, I've tried explaining to them that she has Aspergers and won't react well to being spoken to in a certain way and in a certain tone, not to mention being in s room with people.  I've printed out a copy of what happens when an adult has a meltdown but, any other advice would be greatly appreciated.