The businessman died last week in Florida, where he lived with his family.
"We are shocked. You know that life doesn't last forever on earth. But it's still a shock when you hear that someone you've known for a long time has passed away," says Gunilla Persson.
The man ran a successful business and was so wealthy that for a time he was on the financial magazine Forbes' list of the 400 richest people in the United States.
According to Persson, she had a relationship with the man, who was married at the time, for a number of years. For several years, they were in a dispute over the amount of alimony.
Gunilla Persson believes that her daughter's inheritance will now be large.
She will become one of the richest people in Sweden of her generation.
What do you think?