Hermione would like to speak to Professor Snape's portrait. Snape is not too happy about that.
Draco Malfoy was an only child, but he wasn't lonely. There was the Other Draco. Based on Vera Rozalsky's story, 'Paterfamilias'.
A different answer to the question : if Snape was given a second chance, what could he change ?
Bellatrix and Voldemort meet after their death.