The woman is convicted of having facilitated the crimes by booking and paying for train and taxi journeys, hotels and food for the boys, who at the time were 12, 13 and 16 years old, reports Helsingborgs Dagblad.
The boys carried out, among other things, a blasting in a stairwell in Ösmo in Nynäshamns municipality and two more in Stockholm, as well as started a fire outside a store in Huddinge municipality.
The woman is convicted by Södertörns district court for three cases of aiding and abetting gross general devastation, aiding and abetting gross arson and aiding and abetting the involvement of minors in crime.
The 16-year-old boy is sentenced to closed youth care for two years and eight months for, among other things, gross arson and attempted murder.
The district court also finds a now 13-year-old boy guilty of gross general devastation and a now 14-year-old boy of conspiracy to murder. Since both are under 15 years old, they cannot be sentenced.
A 19-year-old is also sentenced to prison for six years and six months for, among other things, instigating gross general devastation.