Susanah´s biggest mistake was marring alfred
independent of Tristan going back or not, Susannah´s biggesit mistake was marrying alfred she felt nothing for him, sure she liked him as a friend but there was no attraction.
she fisrt loved Sammuel and then was very attracted to Tristan which she thought was love but it really was more lust.
could it have become love yes definitley if Tristan would have stayed and Alfred wouldnt have made him feel guilty with Sam´s death.
another thing is that she kind of knew Alfred wanted to be with her because he was in constant competition with Tristan.
for him Sussanah was a trophy.
maybe im baissed because i didnt like Alfred, but what do you guys think?