It was on September 12 that 25-year-old Lovisa Arnesson-Cronhamre went out for a jog in Penn state, USA, where she received her doctorate in physics.

At home in Örebro, her family was asleep when the phone rang at 04.30am. It was Lovisa's boyfriend.

"It was enough to see who was calling to understand that it was something serious," says Lovisa's mother, Maja Cronhamre.

The family was featured on video link

Hours later, the family was shown by video link when the doctor turned off the equipment that kept Lovisa alive.

"In the beginning, you don't think that's true. But the more time passes, you understand that it has actually happened. It's incredibly heavy," says Lovisa's father Peter Arnesson Gyld.

Can leave the country

The man who killed Loviisa is now suspected of, among other things, murder and manslaughter. But he is a citizen of a country with which the United States does not have an extradition treaty. He also comes from a wealthy family, so now Lovisa's family is afraid that he will be released on bail, even if the judge sets a very high sum.

To stop this, Lovisa's family has started a petition that they will hand over to the court.

"The more names we have, the stronger it becomes, we do it for Lovisa's sake," says her father.

Can a petition affect a legal process?

"It's strange and it would never work that way in Sweden. But as we understand it, the number of names can make a difference, so we are incredibly grateful for every name we receive, says Lovisa's mother.