trauma bonding is a real thing and victims sometimes seek out content to continue traumatization.
your gf is likely seeking comfort through the trauma of current events. since you're both seeking the same thing (comfort) but through different methods you should take the initiative and invite her over to spend time together. set boundaries on what you will and will not talk about though. if she can't follow your needs then you might want to reconsider the relationship.
there's no reason to sacrifice your own mental health for someone who refuses to consider your emotional state.
it's not, it's an ex executive. I surmise he's no longer there for a very obvious reason.