United Kingdom, Sept. 11 -- Emma Heming Willis told her daughters that Bruce Willis would want them to have "freedom" in their own home.

The 47-year-old star has recalled the emotional moment she told her and Bruce's daughters Mabel, 13, and Elelyn, 11, that their dad was moving into a separate house as his frontotemporal dementia (FTD) progresses.

Writing in her new book The Unexpected Journey: Finding Strength, Hope, and Yourself on the Caregiving Path, she said: "'We've come to a point in Daddy's disease where the care he requires is changing. It has to be more tailored to his every need.' I told them.

"''And you should be in a home that is more tailored to your needs now.

"'Also, Daddy would want you to have playdates, sleepovers,...