A close associate and friend of members of the Hawaiian royal family, she served as protège and lady-in-waiting to the future Queen Liliʻuokalani (r. 1891–1893).

[6] In May 1887, her letters indicate she wrote O Makalapua, in honor of Liliʻuokalani, and shared the lyrics and music notes with the then-princess while she was traveling to the Golden Jubilee of Queen Victoria.

[1] In Hawaii's Story by Hawaii's Queen, Liliʻuokalani wrote of her relationship with two of her other Hawaiian protèges Eveline Townsend Wilson and Sophie Sheldon: Mrs. Eveline Wilson from her childhood had professed a great fondness and love for me, and with two other young ladies, Lizzie Kapoli and Sophie Sheldon, had made my home theirs.

Bright young girls, with happy hearts, and free from care and trouble, they made that part of my life a most delightful epoch to me.

[4]In her will, Princess Keʻelikōlani, the largest landholder in Hawaii at the time, bequeathed two small pieces of property to Kapoli, who was at her bedside prior to her death.

The first was one of the princess's house lot on Queen Street, Honolulu, and the second a piece of land called Kaʻala, near Joseph O. Carter's residence, for her lifetime.

A "comfortable home" was built for Kapoli on the ground of the property while the construction began and Bishop wrote to Meyer that he was glad she was satisfied with the arrangement.

[8] Researcher Colette Higgins noted that Liliʻuokalani visited Kapoli at Bishop House during her official tour of the islands as monarch on April 27, 1891.