Kristin Scott Thomas talks with PEOPLE about reuniting with her onscreen daughter from 'The Horse Whisperer,' Scarlett Johansson, for her moving directorial debut, 'My Mother's Wedding,' in which they play a mother-daughter duo for a second time.

The Academy Award nominee catches up with THR about her semi-autobiographical film 'My Mother's Wedding' and why she finally took a seat in the director's chair: "I find it very difficult to actually get my head around the fact that I made the decisions.