She's already said how she's forgotten so much about the incident.
When?
Where?
How she got there?
How she got home?
etc.?
As to your confusion regarding false memories, may I suggest you investigate this yourself:
False Memories
Malpractice cases
During the late 1990s, there were multiple lawsuits in the United States in which psychiatrists and psychologists were successfully sued, or settled out of court, on the charge of propagating iatrogenic memories of childhood sexual abuse, incest, and satanic ritual abuse.
Some of these suits were brought by individuals who later declare that their recovered memories of incest or satanic ritual abuse had been false. The False Memory Syndrome Foundation uses the term retractors to describe these individuals, and have shared their stories publicly.[34] There is debate regarding the total number of retractions as compared to the total number of allegations, and the reasons for retractions.
If you need more info, I'll be glad to help; just ask.