I truly believe that this the healthiest interaction harrowhark has had in her entier life
ALT
This is the first time anyone, especially an adult harrow respected, has implied that opening the tomb was a normal, understandle thing to want to do. This is one of the central sin of harrow’s life, it is her greatest betrayel, and yet abigail is happy for her without prying about the personal private pain.
It’s not absolution, it’s telling harrow that what she did wasn’t even a sin.