Hard to find fault with her in this case. Hopefully, over time, she can find her way back.
Her religion exhorts her to forgive; the bombers' religion(?) exhorts them to murder and maim. Basic contradiction.
I am reminded of a scene in the movie "The Patriot" with Mel Gibson. Gibson's eldest son in the movie is sent to recuit militia to hold back the British troops. After a moving speech in a local parish church, the vicar is asked by a surprised congregation member why the vicar is joining the men for the militia. His answer is something to the effect. 'No only do we have to protect the sheep, but sometimes we have to fight off the wolves.' I prayers go to this woman and her loss. I would be hard put to find fault.
Corrie ten Boom wrote that she struggled to forgive the Nazis and all Germans, and she avoided traveling to Germany for many years. She finally couldn't avoid the prompting to go there, and a guard she remembered from one of the camps she was in greeted her after her speech and told he he had become a born again Christian. She wrote that at that moment, she perceived in herself sort of a supernatural ability to forgive the man for his part in tormenting her and her family.
Forgiving someone isn't the same as saying that what they did was okay or should be without consequence before the secular authorities.
I feel for this woman, but true faith is a gift; it is not consciously acquired or re-acquired over time. Nor can it be diminished by any earthly occurence.