Though people of other religions might not feel comfortable reciting it, the Gayatri mantra is supposed to provide immense energy. I did notice Carol silently reciting something else and that is perfectly okay. The Gayatri mantra means....
God is dear to me like my own breath, He is the dispeller of my pains, and giver of happiness. I meditate on the supremely adorable Light of the Divine Creator, that it may inspire my thought and understanding.
So it's kinda appropriate for the moment and I feel it doesn't solely belong to Hindus as such. It kinda surpasses all religious barriers.