As happens to many people, something was missing from Elsa's life. She did not even realize until Jan came into her charge, yet another troubled teen needing guidance and support. But Elsa never expected Jan to be so aggressive in his pursuit of her or that she would give in so easily to the temptation of the experience he was offering her.
Both Elsa and Jan were getting from each other something they felt they were missing from their lives. Unfortunately, Jan's youth prevented him from seeing the truth that the relationship could not be sustained. It is unfortunate that two lives were destroyed in the pursuit of finding a human connection in this crazy world. Makes me worry if there is any hope for any of us.