Reincarnated as a goblin, but her mother is a white-haired elf?

Ye Yan, an orphan with no parents, was chosen by an assassination organization.
To become a killing machine stripped of all emotion, knowing only how to kill, and obeying "Mom's" orders.
He is the chief of the assassination association.
Then, out of fear of Ye Yan's talent, she was secretly killed by her "mother".
Unexpectedly, she was reborn into another world as the child of an elf, but the place was a little strange...
Watching the goblin cubs rush towards their mother.
Without hesitation, Ye Yan killed the other monsters that were close to the elves.
Then, looking at the red-eyed, white-haired elf loli in front of her, she asked:
Are you my mother?
...
then.
An assassin stripped of all emotion, whose eyes are fixed solely on his mother.
A white-haired elf abandoned by his companions and captured by goblins.
They "met" in the goblin's lair.