I work in the public sector, with disabled people. We have a colleague who is utterly appalling and no one wants to work with her. She does whatever she can to get out of work, has been investigated for making serious allegations and threats about ‘her work colleagues’ online (don’t know what the outcome was but she said she’s ‘out to get us back’) and off ‘sick’ for over a year, on and off. Our manager says he is unwilling for her to return to work. But now we have found out she is back – acting as if nothing has happened and she’s perfect (as she does). Is there anything we can do?