Responses

Go back to chapter 4 and 5 and reread it. Cause ya didn't pay attention. You clearly don't realize that he's purifying her blood of poison, and she' that poisonous blood of her to get them under control and if she can't feed them properly they'll kill her so they can eat.
Not mention if her blood become clean...SHE'S HAS TO START. Which of course- TAKES TIME. And news flash...THEY DON'T HAVE TIME OM THEIR HANDS. So you are in correct.
Bruh I know you feel like a knight in shining armor or whatever but you just ruined her best weapon against her horrid family, my guy!?!?! Like.. DO YOU KNOW HOW LONG IT TOOK HER TO RAISE THEM DAMN DEMONS?!?! Too damn long my guy. So chiiiiiiillllllllll and just be a good pretend toy and just shut it and listen to what she's saying~~~
Being impulsive will have the opposite effect if you don't be considerate of "WHO" her family is.