This marks Susan's first televised interview since losing the love of her life last year, as she has remained mostly quite on the subject.
Susan first met Robin in 2009 just before he underwent heart surgery, and she reportedly helped him during his recovery period. They later said "I do" on Oct. 22, 2011, after Robin finalized his divorce with second wife Marsha Garces in 2010.
In the interview, Susan also shares never-before-seen home movies of the Oscar winner and recalls her initial reactions to his death.
Following his death, Susan released a statement as to what she believed led to the comedian's suicide.
"Robin's sobriety was intact," she wrote, "and he was brave as he struggled with his own battles of depression, anxiety as well as early stages of Parkinson's disease, which he was not yet ready to share publicly."