Darn, ok well I am still confused about that killing then as things like spike growth or wall of thorns are not usually available to sorcerers. Animate Object seems contraversial. It is gone now but when I clicked on Mrs Leventide's house it said she had left the city and this location was no longer available so I think that trail with her and Rouke has run dry (presumably they left together). I voted for returning to the cemetary, I feel like that deceased dragonborn is the key to finding the white dragonborn who if nothing else seems like they are going to try and frame us for a crime (presumably murder).
