British actress Georgina Cates, who starred with Hugh Grant and Alan Rickman in the 1995 film "An Awfully Big Adventure," has died at 51, her daughter said in an Instagram post, Variety and Nine reported.

Her daughter, Naiia, announced her death on Instagram in June, but it had not been reported until now, Variety reported. Nine reported that Cates died on May 6 and that her daughter's post came on June 11. Nine reported that her cause of death has not been made public.

"My beautiful, free-spirited mom lived a hard life and still found ways to make herself and others laugh and smile <3 now she can rest easy," Naiia wrote, Variety and Nine reported.

Cates began acting on television as a teenager, Nine reported. Variety reported that her first role was Jenny Porter in the BBC sitcom "2point4 Children," starting in 1991, and that she also appeared in "Casualty" and "The Bill."

In 1995 she starred in "An Awfully Big Adventure," Variety and Nine reported. Nine reported that she was born Clare Woodgate and that she first missed out on the role after auditioning under her real name. She dyed her hair red, changed her accent and tried again as "Georgina Cates," Nine reported.

She went on to appear with Joaquin Phoenix and Vince Vaughn in the 1998 film "Clay Pigeons," Variety and Nine reported. Variety reported that she was born in Colchester, England, on Jan. 14, 1975, and moved to Los Angeles to act.

Cates was married to actor Skeet Ulrich, and the couple had twins, Naiia and Jakob, Variety and Nine reported. Variety reported that the marriage lasted from 1997 to 2005. "I love you more than words can say sweetheart," Ulrich wrote under his daughter's post, Variety reported.

Cates is survived by her daughter and son, Variety reported.

What we know: Cates, star of "An Awfully Big Adventure," died at 51, and her death was not widely reported for months.
What we don't: How she died.