Laurel has been battling asthma for about two years, her father Andrew Griegs told CNN. Last Tuesday, Griggs suffered an asthma attack and fell into cardiac arrest and died within two hours.
More than 1,000 attended her funeral, her father said, and hundreds more paid their respects online.
"Laurel was a brilliant young lady whose impact in the lives of everyone she met exceeded her immense talent," the Young Broadway Actor News Agency said. "Her wisdom and kindness were gifts to the theater community during her time on Earth."
Exit shared some of the highlights of the star's career through photos and videos.
Laurel made her Broadway debut at the age of 6 in "Hot Tin Roof Cat", performing alongside Scarlett Johansson. In 201
3, she appeared in the award-winning musical Tony as an Award for her role as Ivanka. In 2015, she ended her 17-month internship with Once and transferred her career to television and film.
Production of Once Upon a Time on their Facebook page: "This beautiful young lady was part of our family Ever. Please keep your family in your prayers. "
Eliza Holland Madore, who was cast as Ivanka on the Broadway show, said she was" deeply saddened by the sudden loss of one of my sisters, Ivanka. "
" Laurel- you've always been smiling and always making others laugh, "she wrote in an Instagram post. "I'm so incredibly grateful to have got to know you. You will never be forgotten and we will never stop loving you."
In the last few years, Laurel has participated in several commercials and shows. She starred in the 2016 Woody Allen movie Café Society and appeared in two episodes of Saturday Night Live.
A page about the star contains notes of support and admiration.
"I had the distinctive pleasure of getting to directing Laurel in two plays last year at her school," writes a user named Jessica Triet. "I could say that she has something special to give to the world . She had such a bright light shining from her.
"She was kind to everyone, hardworking and just a pleasure to be around."  Another person, Lola Horowitz, writes, "I met Laurel at our theater school and we became very good friends. I knew immediately that she was one of the kindest people I ever met. "
" liked to encounter her on auditions – she was a sweet and real ray of light, "writes Echo Picone. "I wish I knew her better, but her spirit was bright enough to remain in my memory."
Elizabeth Wolfe, Monica Heider, and Melissa Gray contributed to this report.