Why Giselle didn't that she doesn't love her husband to Isaac? ╥﹏╥ (╬￣皿￣)

Maybe she was afraid of what Isaac might do with that information? She said she was slightly scared of his face void of emotion

True evethough it wouldn’t be that bad in my opinion. Non I’m scared that Isaac will be hurt because of it and that something bad will happen... Why hasn’t she run away with Isaac yet?
┗( T﹏T )┛