Director J.J. Abrams had originally written her character out of Fisher's scenes in "Star Wars: The Rise of Skywalker."
The 26-year-old actress sang a song to her mother, who died in 2016 at the age of 60.
"This one goes out to anyone having a less than perfect Mother's Day today."
The late actress won best spoken word album for her memoir "The Princess Diarist."
Fisher died in December 2016 after suffering a heart attack.
Who's cutting onions?
"Happy birthday mom, I sure do miss you and the cozy days."
"If I say that I’m doing good, I’m too happy. And if I say that I’m not doing good, then I’m a mess," she told Ellen DeGeneres.
"Now I get to be just Billie.”
The actor has been incredibly supportive since Lourd lost her mom Carrie Fisher and grandma Debbie Reynolds.
May the 4th be with you.