Her father, Doug, who works for the Boston Herald, announced on Instagram that his daughter passed away in January 2021. Kyd reported that Hallie’s relapse after a bone marrow transplant had worsened her condition.

“Hallie died peacefully in her sleep on Sunday morning as Jen and I held her hands in bed,” Doug stated in an email. “We feel absolutely lost and heartbroken without Hallie. “Our lives will never be the same. Following Hallie’s recurrence, Doug stated that the family was attempting to remain optimistic despite the evident challenges in his daughter’s journey.

“I’m choosing to stay positive,” the reporter stated at the time. “Hallie has overcome every challenge AML has thrown at her thus far. This will undoubtedly be her most difficult test, but if anyone can overcome it, it is our fearless little Hallie Bear.”