You're building a narrative that doesn't exist in the article - there was no mention of a previous violent incident leading to this.

This was just them pulling a stupid, and the hospital apologizing for it.

Not only is email not able to be kept private, you also can't guarantee the patient is going to get it in any sort of timely manner, or in fact, at all. It's also ensuring that no follow up questions can be asked in a timely manner.