Bruce Willis has developed a "sweetness" amid his battle with frontotemporal dementia, says Rumer Willis. Photo / Getty ImagesBruce Willis has developed a “sweetness” amid his battle with frontotemporal dementia, says Rumer Willis. Photo / Getty Images

Rumer Willis says her father Bruce has shown a sweetness and gentler side in his dementia fight. Photo / Getty ImagesRumer Willis says her father Bruce has shown a sweetness and gentler side in his dementia fight. Photo / Getty Images