I was playing Rebirth yesterday, and found something interesting. This happens if you decide to lie to the Rangers about no longer being a telepath.
Who is ‘her’?! My puppet is male, therefore it’s not about Heartbreak since their gender is the same. If it’s not Heartbreak, then naturally I suspect the Void! Who else would mess with Sidestep’s head? Another evil ‘her’ is Regina, but I doubt she can affect Sidestep’s head directly like that. Also notice that Sidestep said it was ‘before’ they almost died, so before the Heartbreak Incident.