A 20-year-old nanny was arrested Tuesday in Jeff Davis Parish for allegedly having an inappropriate sexual relationship with a 15-year-old male juvenile in her care.

Izabella Rose Quistorf, 20, of Two Rivers, Wis., was arrested for carnal knowledge of a juvenile.

Ouistorf was arrested after Jeff Davis Parish Sheriff’s deputies responded to a residence on Son Gillette Road in Jennings in reference to a person threatening to self-harm, Chief Deputy Chris Ivey said.

The complaint told deputies his live-in nanny had threatened to access a knife to self-harm and he had pushed her out of the kitchen.

Deputies learned from the complaint that an argument was initiated when he found Snapchat messages between the nanny and his teenage son involving inappropriate sexual behavior between the adult and juvenile.

Quistorf was taken to Ochsner’s Jennings American Legion Hospital for evaluation. She was later booked into the parish jail.