IKR.
As said posters are projecting due to their own social difficulties.
This is the huge challenge with ASD, it's a communication disability and with that may come many behaviours either to compensate or due to trauma or simply due to being single minded and unable to see things form another's point of view that can make living together hellish and indeed emotionally coercive. I speak from experience.
I wouldn't bother wasting any time on the flat share or challenging their decision, just a legal way to exit the contract. DD should speak to the landlord, give her notice and cooly inform the ex house mates. Why have they all left and why is your dd still there and not home too? She will need to move her stuff.
Op's dd likely made mistakes and the other sharers have too. If OP's dd is very sensitive to rejection it would make it especially difficult to have an open conversation with her. The problem with ASD is that often autistic people struggle with understanding another person's experience or their own behaviour and won't empathise or be able to change.
My dc will soon go to uni and I am trying to help them be a good house mate now. I am teaching them to clean up after themselves, communicate well, and being a considerate person but also to have strong boundaries respecting another person's space and need for privacy, being aware that people can feel home sick or stressed, managing noise and being considerate about bringing guests or love interests home.
Granted it is hurtful for Op's dd but these students are not necessarily bullies, nor do we know if Op's dd is forceful or moody. The best outcome is to learn about her own needs, accept herself and that house shares may not be for her at this point in time. She should focus on her final year, work experience, part-time job and if possible find a lovely accommodation for her final year. You can turn this around but try not to victimise her, else she won't learn about herself and how to best look after her needs and underdone her limitations.