Aislyn didn't use the Time Turner on purpose; she was a Muggle after all, she didn't know better. Suddenly she found herself sixteen years back in time, in the year 1996. Now everyone's asking her questions she doesn't know the answer to. She just desperately wants to get back home, to her own time.
But now that she knows about the world of Witches and Wizards, it's unlikely she'll be going back to her own time soon. Especially because no one knows how to send her back.
How did a Muggle girl get mixed up in all this? And to top it off, Voldemort's rising. Aislyn's life just gets better and better...