As federal agents continue their investigation into the Boston Marathon bombing, the focus is increasingly shifting to the woman one of the suspects left behind.

Katherine Russell - described as a one-time all-American girl - was married to bombing suspect Tamerlan Tsarnaev at the time of his death.

Here are seven things you may not know about the 24-year-old widow of the alleged jihadist who slipped through the FBI's net...

1. She Changed Her Name

Shortly after converting to Islam, the Rhode Island native changed her name from Katherine to Karima. The mom-of-one also took her husband's