Well OK, I'm disabled, and what exactly did she do wrong? She didn't even get the chance to say anything! It sounds like she was sticking up for some facility members who were being trashed by the SU's disabled wing. Sorry, but there's nothing more patronizing than non-disabled people "speaking up" for the disabled - when most of us are perfectly able to do so ourselves, and I'm guessing the disabled division of this Uni's SU are full of people who don't even have disabilities or those with fake ones such as self-diagnosed OCD/Social anxiety (social anxiety is never a standalone condition, it arises from things).
Disabled people by and large do NOT want "safe spaces" - we just want to be accepted anywhere. We do not retreat and we do not hide ourselves away in cozy little library rooms.
And most of us welcome input from non-disabled individuals who are in positions to actually offer valuable input.