The alleged other woman is finally talking.

Marie-Anne Thiébaud, 37, the longtime secretary and house manager at Shania Twain and Mutt Lange's estate in Switzerland, spoke to E! News exclusively today about her reputed role in the couple's headlines-grabbing breakup.

"I don't work for them anymore—I am retired," Thiébaud said by telephone from her home in Geneva.

"I know what you're ringing to ask me about. But when marriages break up, they break up for all sorts of complicated reasons—it's never just one reason. And those reasons should be kept private."

She continued: "If you're looking for a person that broke up a marriage, then you have the wrong person. I'm not that person."

Twain, 42, and Lange, a 59-year-old record producer, announced their split last week after 14 years of marriage. They have one son, 6-year-old Eja D'Angelo.

People magazine has reported that Thiébaud, once one of the country star's closest confidantes, and Lange have left their respective marriages for each other and are still in a relationship.

Thiébaud declined to comment any further on the reports, saying news outlets shouldn't "intrude into people's private lives."