Lily was born in Riverview. Since a child, she was interested in cooking and often spared her time in front of her toy oven.
In her teenage years, Lily and her family moved to Twinbrook. During this time, she met a boy named John Redfield. They became friends, and later started dating. Lily graduated from high school with an A and became class valedictorian.
After graduated from high school, Lily started working in a grocery store.
After John Redfield graduated from Sim University, he proposed marriage to Lily which and she accepted. After that, she gave birth to twin daughters Leona and Jean Redfield, and a son, Chris who was born 6 years later. During these years, John had a conflict with his father who wanted him to continue his step as businessman, but John didn't want to. Later, two days after Chris's 3rd birthday (three weeks after Jean and Leona's 9th birthday), John, with Lily and their children decide to move to Sunset Valley.
Lily learned that her daughter Jean was saddened with their decision to moved away from Twinbrook. However, she consoled Jean and assured her that she would make new friends in this new town.
After days, she adapted herself to living in the new neighborhood, she even made friends with Wan-Goddard family and Molly French because Lily joined the culinary career, working in Hogan's Deep-Fried Diner.
Despite her position as Kitchen Scullion, Lily often asked for help from her senior co-workers, who were impressed with her talent in cooking. Her Senior Emma Hatch even praised her handmade meal and told that she probably will promoted soon. Two months later, Lily and her co-workers heard the news that the restaurant will be demolished by Nick Alto, which saddened her co-workers. Realizing her co-workers' concerns, Lily had her husband John, who worked for Vita, asked him about the rumor, which John promptly said that he will find out.
14 days before the mayor election, Lily approached John in the Central Park and told the truth that she had made a decision to side with Nancy Landgraab, which angered John who already told her that she was not supposed to be choosing sides before he decided. After the depressed John started to question his grandfather's dream, Lily slapped him, and was disappointed with his current behavior. Before returning to the diner, Lily told John that she will always love him, even if John chooses the opposing side.
Lily was watching Vita's inauguration from the television. She stunned and had her jaw dropped after seeing her husband in the TV.
Six months after the inauguration day, she and her family brought by John to made a visit to John's father, Thomas in Twinbrook. Lily also reunited with her parents, Arthur and Marcy Williams.
Seven years later, Lily became a pasty-chef in her workplace. Lily's appearance was still same during the event of Book 2.
In the beginning of the story, Lily was desperately tried to waking up Leona from her sleep. Later, she and John went to met their old friends, the Delgado family and help them unpacking their belongings.
After Jean returned from France, Lily was present to picked her up. During Jean's homecoming party, Lily found that her son, Chris, was seemingly talking to himself, made her curious. It was later revealed that Chris had an imaginary friend known as Charlie, who later turned into a real child thanks to a potion made by Jean. Lily and John promptly adopted Charlie into the family.
During the time of Book 3, Lily already became a line cook in her workplace.
Lily was between 45-46 years old and had a serious midlife crisis. She often whining about her age and calling herself "old", especially if she remembered how fast her children grown. However, her sons, Chris and Charlie often consoled her by saying that she was still young to made her felt better.
When Leona and Jean about to return to the University, Lily was very sad, but, her daughters comforted and reminded her that they wouldn't be gone forever.
At the epilogue which set ten years later, Lily, now 56 years old, invited her entire family, including her grandson and sons-in-law into a family diner. Lily was seemed so happy seeing her now grown-up children.
- In my first draft of A Sim's Tale, Lily's name was originally written as Lili and her full name was going to be Lilian instead of Emily.
- Lily suffered myopia, just like her daughter, Jean.