I think you have the makings of a fine story here. I usually like a proactive Harry, which seems like where this may be headed. I would think that killing Hedwig might cause Harry to think that the Dursleys might not stop there and that leaving was deffinitely indicated. I imagine were they still living Harry might extract a suitable retribution on the Dursleys, That would certainly be my inclination under similar circumstances. It is good to hear from you again. Thanks for writing. W.