The moment Lilia noticed her master being taken away by none other than one of the finest and oldest workers, she knew she had to tread carefully.
She was weaker than Albert and she knew that, that's why she didn't resort to confrontation when she didn't have any support. Not only that would result in futility, Albert might as well kill her—the sole person who knows his whereabouts.
Lilia didn't care about her life, however, if she made any rash decisions, her master might get into a dangerous position.
She wordlessly followed the butler rather than informing anyone since that would have been foolishness.
