One thing I noticed buried in the article, "One eyewitness at the underground station told MK how the woman screamed: 'My child was killed…I will blow up everyone'." I'm going to assume, until proven otherwise, that her child was an Uzbek volunteer fighter for ISIS and was killed during one of the Russian military operations.
In any event, the religion of peace strikes again. A troll on a more secular forum once posed the question, 'How do I conjure a demon?' I replied by simply linking to a video on "How to Make Salat (Muslim Prayer)".