"Master, don't fall into his trap. He's a very cunning man.
Let's... let's leave him be and depart from here. For my and Leela's sake, if not yours."
Layla implored Eliza to avoid another confrontation with Eren.
The injuries Eliza sustained from her battle with Demonmir still affected her, despite Layla's use of her most potent potions. But it wasn't just Eliza's injuries that concerned Layla. Eren attempted to provoke her into action.
She knew Eren wouldn't speak to Eliza in such a manner without having something against her. By providing her with logic and a personal plea, Layla wanted to give Eliza enough reason to pull out from a potential fight against Eren without hurting her pride.