The boys' mum started wearing a hijab in recent years, and Tamerlan's young Christian-turned-Muslim wife and mother of his child, Katherine Russell, also started wearing full Islamic garb. Non-religious Muslims don't wear hijab nor do their husbands expect them to. Not to say that all religious Muslims are radicalized, but I would venture to say they could be one step away from that.
As for Tamerlan's wife, if we can believe her lawyer Amato DeLuca, it turns out that Katherine had no clue her husband was plotting to blow up innocent people. Apparently she was too busy working her butt off as a home health care aide 70 - 80 hours per week, while her hubby took care of their 3-year-old daughter Zahara, and worked out the details of the Boston Marathon terrorist attack with his little bro.
According to DeLuca:
“When this allegedly was going on, she was working, and had been working all week to support her family."Who knows if this is true or not, at least her lack of knowledge, but it's a little hard to believe that she would be so totally clueless since she lived in the same cramped apartment.
The DailyMail has some interesting information, as does AP's Big Story, on Katherine and how she became involved with Tamerlan. According to friends and others, this promising artist was dominated and influenced by her religious husband, a man she married in spite of being violently beaten up by him in 2009.
Too bad she took the wrong fork in the road when she married Tamerlan.