>> two u.s. officials said malik seemed proficient with the ar-15 she used during the massacre. the couple's family maintains they had no idea that they had been jihadis, even though farook's mother lived with them in the house. >> syed and tashfeen were isolated and the family was completely surprised and de stated, but no one had any knowledge. if anybody would have, they definitely would have done something to stop it. >> pam ma brown, cnn, washington. >> those who knew tashfeen malik at university in pakistan said she seemed to be an engaging student. >> a women's institute that teaches their own conservative and ultra orthodox version of islam. the san bernadino shooting suspect tafsheen malik studied