I think it would depend what area they were placed in. I don't think they wear scrubs in admin departments such as HR or PALS, own clothes I think. Admins on wards wear scrubs for infection control purposes but they would usually be a blatantly different colour to the blue. E.g pink or maroon.This is possible. I'm assuming that she'd still be in uniform when on these paper sorting departments? If so, and if the reason they put her there was because she was a danger to patients - particularly in a malicious way - then why was she even allowed on the premises?
It would be difficult if they kept her on Trust grounds whilst under investigations, surely they would have to ask her to give back her door swipe card and ask her not to visit the neonatal ward if there was a safe guarding concern.
Perhaps if the chief exec was hoping it would 'swing the other way' and all the drs would come under scrutiny instead. If that were the case then perhaps she was initially seconded but then after her first arrest worked from home?