I wuv it!
Two comments: First, is the effect that adds or subtracts successes a Shaping effect, like astrological workings? Second, perhaps there should be some sort of Emotion or Compulsion effect compelling people to stay and meet their true love.
Thinking about it, I'm of two minds on the subject. On the one hand, it could say that it's manipulating your Fate directly, in which case it would be a Shaping effect directed at you, so IPP and similar would stop it. On the other, one could argue that it's reshaping the world, such that you have to go there, in which case it's still shaping, but it's directed at the world around you, so IPP doesn't apply.
Depends on how much you want the Solar to have done vs the Sid and/or whether or not you think it's important for that effect to have a keyword defense.