Madness
Rose Tyler was a recluse. After the death of her husband, she secluded away in the mansion, never venturing out. Tony attempted, at one time or another, to try to visit his sister, but the hid in the massive house. Finally, he gave up.
Rose held a very private funeral, burning her husband on a funeral pyre, much like he had the Master. Despite him being mostly human, he still had a bit of Time Lord DNA and no one could have that. She screamed and howled until the fire was nothing but cinders. She manipulated the atoms in the air around her and whisked the ashes of her husband into the stars, where he could lay in eternity.
She returned to the house, more melancholy than ever. She would have attempted suicide, but knew it would be of no use. One thing she'd learned during her stint of Gallifrey is that Time moved through her like a sieve, unlike Jack, whom Time avoided. Her life was tied to the Vortex and nothing could kill her. Incapacitate her, yes, but not kill. So Rose was left to suffer in her despair with no chance of relief.
She withdrew into herself, reliving her life and the memories she had with those who were lost. Her Mum and Dad, Joshua and even the Doctor swam through her vision. She was in a living nightmare. Rose was left again and again by those she loved.