>>51209581She's turning into her mother, basically. Lillie has had no control over any aspect of her own life up until this point. Now she's free, and she has a weaker being (Nebby, who can't even defend itself) to lash out at and finally be something that she can have authority over. Just as her mom was emotionally abusive and dominating over her, so too will she be emotionally abusive and dominating over Nebby, making Nebby feel as helpless as she had felt. And thus the vicious cycle continues...