I'm a little confused with these quests and the possible bug that might stop me from eventually buying Hjerim. Apparently Killing Nilsine Shatter-Shield in the mourning never comes quest causes her mother Tova to commit suicide and bugs the Blood on the Ice quest and stops it from being activated and initially stop me from buying Hjerim.
If I complete Blood on the Ice first and then finish Mourning never comes, will I still be able to buy Hjerim?