Lilith is a yandere.. well.. kind of.. shes a smart yandere, yes she wants to end up murdering any girl who looks at you in even a slightly romantic way. She stalks you, etc. Normal yandere, but she also gets self conscious, she wonders if she should be the one that should be with you. She worries that you might see her stalking you and hate her for it. When she gets her murderous thoughts she immediately shuts it down out of fear you'll find out and hate her and never want to get with her. The definition of all bark (or thought in this case) and no bite