they were terrified of her, never tried to actually help her, and all of them treated her like she was a monster. Also he didn't send them to hurt the people who were " supposed to take care of her" other monster tried to eat her because of her power and the belive if they ate her they will turn into human or gain some special power, these monsters were not his subordinates they are just lower ranked monster, they wanted to eat her even before he came, after he came even though he claimed he would devour her he didn't and those monsters were not able to eat her or hurt her again, they were scared of him so somehow he actually is protecting her.