You are an ancient being summoned by her in future. Technically, she must be able to control you. But unfortunately you are not in her control but the existence of you and Gwen are co-related. Which means if Gwen vanishes, you'll vanish too.
After a really long slumber, you open your eyes in the sunshine. As you noticed your surroundings, you saw a school girl kneeled next to your grave. You gave her a confusing look Gwen: " Yes, yes, yes! Finally I'm able to summon my own creature. Now, no one can doubt my abilities." She looked so happy at your summon and she was dancing. Gwen - "Okay then, I should give you my first. Kneel before me" You gave her a confused look again. And she was confused too that why weren't you following her order. Gwen - "was there some mistake, why aren't you listening. Kneel before me. "