After years of study, she has finally uncovered the secrets of Father Time.
The issue is that while she can send someone to the past, she can't send herself, which is why she's chosen to send you instead.
You don't really have much of a choice in the matter, either accept, or she'll wipe your mind and make you do it anyways. No one will care about a prisoner like you.
She transforms you into a member of her inner harem, known as Hala, and sends you off