Lie to her and let her be on her own

You do not tell her the truth. You tell her her lands were given to some unknown low born man as compensation for his services in the past. She understands Henri must be giving out titles and lands to win support for his rule... You could have offered her protection, but you fear if you shield her, Henri might come knocking one day and kill you both... So you bid her farewell after taking her to the next town with a little money to start her new life. She looks quite desperate, but in such dire times hard decisions must be made... She hugs you one final time before you keep travelling to your manor.