IMO and 10 years NHS experience, this sounds like many of the numerous and ridiculous disciplinaries in order to get someone out, probably her face doesn't fit.
I see patients on a daily basis and i would definitely err on the side of caution in this situation. I'm completely non-religious i do have some opinions regarding certain religions, but this is something i'd discuss down the pub with my mates. Never with a patient for that reason.
A colleague of mine was reprimanded once for advising someone she was counselling to find work, as he was complaining of boredom watching TV all day long. His reply was 'Do I look like a mug?' and then he complained about her. She was told to keep her opinions to herself or lose her job, which is what we all do now. We make no assumptions and do our jobs like lemmings - the great old NHS