That's true, but the other people? He can't save her from others hate. He tried to send her away, but everybody knows she was a noble woman - she would never lived a happy life. Maybe, if she can go abroad, far-far away from there, but as I remember, he wanted to sent her a monastery. I don't think that would be a safe space for her, just permanently maybe. All her other relative suffered from the situation, so...
But yes, the Wolf Lord tried to offer some kind of help, but I think the FL also know that, can't keep hiding forever in this country.
And... yes. He tried to help - but too little, too late.
The plot is just like "Ookami Ryoushu no Ojou-sama / The Wolf Lord's Lady", and... I really-really hate that story. I understand, the FL and the ML also a victim of their era, but... I could never forgive a man, that erase my family, my friend, my everything. Revenge plot is not necessary, but... live with him a happy married life, and forget that, he lied and decived you... nope.
So, I hope in this story the FL leave, and find her happiness without her "husband", and that man can also find his peace somewhere else.