Sharon Horgan Says 'Outspoken' Carrie Fisher 'Would've Liked to Have' Worked More After “Star Wars” Fame (Exclusive)

"She was a storyteller in her writing and in her acting, and she would've loved to continue doing that," Horgan tells PEOPLE of Fisher in this week's issue

Carrie Fisher had a lot left to give before her death in 2016.

Sharon Horgan, who worked with the late actress on Catastrophe, was one of the last people to see her before she suffered a heart attack on a plane ride and died days later at age 60. The actresses had dinner together with Salman Rushdie in London before Fisher boarded a flight back to Los Angeles, where she went into cardiac arrest.

Thinking back on her time with the star, Horgan, 54, tells PEOPLE in this week's issue that Fisher was "kind of dangerous."

"I think because she was such an outspoken, honest person, she got the short [stick] in Hollywood. She was honest and outspoken when it wasn't fashionable," she says.

Related: Ewan McGregor Says It 'Means the World' to Have His Hollywood Walk of Fame Star Close to Carrie Fisher's (Exclusive)

Describing Fisher as a "a woman who didn't necessarily play things the way she was told to or supposed to, and she was a f---ing entertaining person and a huge wit and an enormously smart person," Horgan says that the late actress wasn't always satisfied by her career as she felt boxed-in after the success of Star Wars.

"She was very aware that her fame was something that's hard to understand. You can't understand it. She would say, 'I'm like Mickey Mouse,'" Horgan remembers. "You're put into a film like that and you become so famous, it's almost like your image isn't your own anymore."

Related: Carrie Fisher's Life in Photos

Though she understood the difficulty of her fame, Fisher "had this unnecessarily long period of time where she wasn't working, where she would've liked to have been working."

"I wish I was writing parts for her," Horgan says.

"I think at the end of the day, she was a storyteller in her writing and in her acting, and she would've loved to continue doing that through those mediums," she continues. "It's our loss. It's a shame because she was just an incredible person."

For more on Sharon Horgan, pick up this week's issue of PEOPLE, on newsstands Friday.

The actresses met when Fisher joined season 3 of Catastrophe — the sitcom Horgan created and starred in with Rob Delaney — and Horgan says she "felt like I was just getting to know her" when she died.

"She knew how much I enjoyed her. She was so funny and so quick. And I mean, she also loved being in [Catastrophe]. She loved getting a chance to play a character like that," the Bad Sisters creator and star says of Fisher's portrayal of her character's difficult mother-in-law, Mia. "And she wishes that she had more of an opportunity to do that."

Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer​​, from celebrity news to compelling human interest stories. 

"I think about her a lot," Horgan admits. "Mainly because I wish she was still around."