Buckley Kuhn-Fricker was so disturbed by what she discovered about her teenage daughter’s boyfriend that she spent a tumultuous week pushing for a breakup. By Thursday, she texted a friend saying the “outspoken Neo Nazi” was out of their lives.

But just hours later, the family said that the 17-year-old boyfriend had shot and killed Kuhn-Fricker, 43, and her husband, Scott, 48, in their Reston, Va., home. It happened around 5 a.m. Friday, while the couple’s children and relatives were inside. They had gathered to celebrate the Christmas holiday.