She should document absolutely everything and then seek a protective order in whatever jurisdiction she’s in. She should also really consider setting up a camera to record any areas she’s concerned he will visit or vandalize again. Video evidence will be actionable where harassment through email/text frequently is not actionable. She could maybe reach out to a domestic violence shelter in her area for advice too, as they should be experts on this type of situation

Totally this. I have friends who are vegan, everyone in our group knows they’re vegan, and they never stand in judgment of those of us who eat meat or talk about being vegan or why they’re vegan unless they’re asked. Simply modeling their diet with total non-judgment has made them some of the best ambassadors for veganism I’ve ever met. Almost all of us have reduced our meat consumption over time as a result

Obviously this is entirely your choice to make, but this all sounds really rigid and restrictive. If you view someone telling you about their weekend as “wasting time,” I have to wonder if that mentality cuts into your personal life too. It’s totally reasonable to make friends at work. If the concern is that they’d bring your personal drama to work, then just don’t involve them in any personal drama and you’re gold.