Donna returns to Beverly Hills in 2009, bringing her baby-daughter Ruby along while visiting Kelly—who's become a successful guidance counselor at West Beverly—and her half-sister Silver. Donna later meets writer Diablo Cody (guest starring as herself) and provides her with a Donna Martin original. Cody wears the dress to a red-carpet premiere, accompanied by Donna which Kelly and Silver proudly watched on TV. Afterwards, Donna introduces Cody to Kelly and Silver, who happened to be a fan of hers. Later, Donna reveals to Kelly that she and David have separated. Planning to open a new store, Donna begins scouting for a building to lease in town. She also tells Kelly that while David had grown content with living in Japan, she's come to miss Beverly Hills. This brought her a great degree of anxiety and sorrow with regards to the relationship, though Kelly provided her with comfort. Eventually, the two decided to spend an evening out together. Following a session of drinking and dancing, Donna found a building to lease as her new store. She also received a message from David, who stated that he was thinking of her.
Years after the wedding, David and Donna moved to Japan on business. Though they'd initially planned on staying for only a year, they ended up living there for at least four, and had a daughter named Ruby. In the spin-off 90210, David's marriage entered a period of separation shortly after Ruby's birth, due to his wife missing their hometown. Eventually, Donna—who'd become a successful fashion designer—returned to Beverly Hills with Ruby. After reuniting with Kelly, Donna opened a new store. She became quite saddened over the separation, but received flowers and a message from David, who stated that he was thinking of her.
Ruby is the daughter of Donna and David, born in 2008. Ruby moved to Beverly Hills from Japan with Donna in Autumn 2008