Whoa. With that added info, hmm...probably you have to say it ever so briefly and then be honest. It is too painful for your to talk about. They can research it in the news and in official records. ?? I would assume.
Change the subject to her. Tell her it is too painful for you to talk about and why. Then say you want to know about her. Most people like to talk about themselves and it will feel gracious to her for you to be interested.
Yes. It is there in the record/papers.
Painful? Well, to be honest if was a relief for many of us.
We talk about terrorism, few really know what it means.