Princess Shigeko was her older sister; her younger siblings were born after her death.

[3] On December 17 of that same year, she had her first outing when Empress Kōjun visited the Imperial Palace of Emperor Taishō with her older sister, then Imperial Princess Teru-no-miya Shigeko, on the occasion of paying respects.^ [5] She was breast-fed by her mother and was growing well, and on March 3, 1928, was planning on attending her first festival on a grand scale.

[7] The symptoms of eczema that had been present in the past worsened, swelling of the right submandibular lymph gland was also observed, and a diagnosis of pharyngeal catarrh was made.

[8] The New Year's holiday celebration was postponed, and the Empress and court physicians took care of her.

[7] The events planned for the Empress's birthday on that day were cancelled, and her maternal grandparents, who were staying at Atami, were requested to return to Tokyo by midnight.

The empress also gave a grant to Keifukukai (now the Social Welfare Corporation Imperial Gift Foundation, Keifuku Childcare Association) and the organization established the "Late Princess Sachiko Hisa-no-miya Commemorative Child Protection Fund" which created facilities throughout the country and also overseas for the protection of infants.