The Sorcerer's Widow — Lawrence Watt-Evans

The great wizard Nabal's death offers many opportunities, both for those who knew him and those who did not. For young conmen Ezak and Kel,  it means a chance to loot the wizard's estate ... if they can win the confidence of Nabal's widow, Dorna. But Dorna has plans of her own. She means to leave the tiny village for a better life in the city. And all of Nabal's wizardly artifacts and talismans will pay for that new life -- if she can only get them there intact!