In soap operas, characters often forget their past experience following some trauma. they don't merely forget the traumatic event, they forget who they are, where they came from-they lose almost all memory of their lives. they then move to a new place and start a new identity. this would best be described as an instance of

dissociative amnesia with dissociative fugue

Explanation:

It is an amnesia that appears after a stressful event or conflict. It is usually accompanied by an attitude of indifference towards this symptom. Dissociative amnesia is characteristic of both dissociative fugue and dissociative identity disorder, but if it appears in these cases, the diagnosis of dissociative amnesia should not be made. In posttraumatic stress disorder and in acute stress disorder there may be amnesia of the traumatic event, dissociative symptoms are also part of this diagnosis.

the answer is a

poison her by building up too much vitamin k in her body or cause hair loss and a severe case of acne