Leah Degrazia / E! Online: Why Kate Winslet Says She Had to Get "Proper Help" Over Her Mare of Easttown Role - Kate Winslet detailed why she needed "proper help" after starring as Mare Sheehan in the HBO crime drama Mare of Easttown, saying she "went a bit mad" after playing the role. - Kate Winslet is getting candid about a difficult period in her life.