I loved the story. It's not the type I usually write, but I felt it portrayed the mindset of the girl very well, the anticipation, the nervousness, the waiting. And keeping the background, esp the Master, so vague makes the reader share the uncertainty the girl feels.
I beg to differ from the other reviewers here in one point, though. I don't think the story needs a continuation. Of course I want to know what will happen, but breaking off at this point leaves it all open to the reader's imagination, which may be the most erotic part of the story. After all erotic writing is about what goes on in the head. And the story is called "Anticipation" after all.
One very minor point (and I know some people will call me small-minded): Do go through the story again and correct the spelling. Finding typos can really beak the mood, at least for me. Having said that let me hasten to add that I make lots of them, too.
If this is your first effort, be sure to let me know about the next.