It was beyond doubt that Lilith had to be a High Tier Vampire. The self-repair abilities of High Tier Vampires were incredibly potent. To say nothing of lost organs, even if the majority of their bodies were destroyed, provided the conditions were right, High Tier Vampires could find opportunities to regenerate anew.
In many rumors, it was even believed that only High Tier Vampires could kill their own kind. In fact, it wasn't a lack of ability.
It was because only fellow High Tier Vampires could detect the vital organ tissues of their own kind, dismantle their regenerative abilities, and then thoroughly kill the enemy.
If Roger were here, then recalling everything he saw in the memories of the Shadow World, he would understand why Green did not choose to destroy all parts of Anna's body after killing her.
Instead, he chose to seal and divide.
As a result, Lilith was forever missing important parts of her body, making her less whole.