You are correct that you don’t have to be a Christian to to good works, but she however does claim to be one and her word is good enough for me.
I do know that the pro-terror International Solidarity Movement (ISM) honored Kayla Mueller today for her activism in the West Bank.
Abdullah Abu Rahma, coordinator of the popular committee in the village of Bil’in where Kayla joined the protests, told ISM: “Kayla came to Palestine to stand in solidarity with us. She marched with us and faced the military that occupies our land side by side with us. For this, Kayla will always live in our hearts. We send all our support to her family and will continue, like Kayla, to work against injustice wherever it is.”