Not a single word, but Jesse Jacksonesque gaul fits, too.
I think you mean “gall”, but the point is well taken.
This comes very close to the old joke about the woman who murders her husband and then requests leniency from the court because she is a widow.
I have been working on an essay, which I may publish soon, in which I will stipulate that the Western cultural aversion to collective responsibility for terrorist crimes should and must be overcome.
Terrorists do NOT operate in a vacuum. Can there be any doubt in anyone’s mind that this “woman” did NOT know her husband was planning this act? And that by not stopping him she is a guilty as he is for the deaths that resulted?