Mara Jade

Mara Jade is a character from the Star Wars continuum. Force-sensitive, she was raised by Emperor Palpatine to be an assassin and while dying, he sent her one last command: to kill Luke Skywalker. She joined a smuggler's crew and was eventually forced to work with Luke, during which time she grew to respect him. Several years later they were married, and had a son, Ben.

More about Mara Jade-Skywalker at Wookieepedia.