The woman was called in for questioning by police on December 22nd and placed under arrest later that day, the local Dala-Demokraten newspaper reported.
Police were alerted to the woman's relationship with the teen after she spoke to a social worker about the affair and the social worker in turn filed a report with police.
The couple allegedly began their relationship in August and continued to see each other up until the time of the woman's arrest.
According to court documents, the 32-year-old had sex with the boy at least five times.
The victim of the alleged crime has confirmed his relationship with the 32-year-old.
“The boy confirms that the information she has given is correct, but he does not believe he is an actual victim of rape,” prosecutor Fredrik Skoglund told the newspaper.
Normally having sex with a minor is a crime in Sweden only if the younger party is younger than 15-years-old.
However, the age of consent can be raised in cases where the younger person is seen to have a relationship of dependence with the older person, such as a teacher and a student.
In such cases, sex between and adult and someone as old as 18-year-old can be classified as child rape, Skoglund explained.
However, Skoglund refused to elaborate on the exact nature of the relationship between the woman and the 16-year-old.
According to the newspaper, the 32-year-old woman has no criminal record who is engaged in volunteer and charity work which puts her in close contact with children.