Last portrayed by Maura West, Diane apparently died in 2011 on Y&R. She was bashed in the head by Nikki Newman (Melody Thomas Scott) in self-defense. While speaking to EP Anthony Morina about possibly returning, Walters remembered:
I said, ‘Sounds good.’ He said, ‘You do know that she’s dead.’ I said, ‘Yeah. Wasn’t me who died.’
Walters appeared in a promo that showed a "mystery woman," saying:
I wanted to text [my good friend] Christian LeBlanc [who plays Michael] to tell him I was back. He’s made jokes about my ‘farm girl man-hands,’ so I thought everyone is going to recognize those hands. I tried to give my hands and feet a nice angle.
The Flash actress is playing catch-up about the last time Diane was in town. She recalled:
I’m reading the scripts and people are talking about how much they hate Diane and how much damage she’s done. I emailed the writers and asked is there anything specific? The list I got back was hysterical! Diane slept with Victor [Eric Braeden]. She slept with Nick [Joshua Morrow]. Adam [now played by Mark Grossman] helped her fake her death, and she was with this guy named Deacon [Sean Kanan]. I thought, ‘I have so much to learn!’