She responds to say that he has spies all over the house and that it
is not safe for them to be lurking about the house. She vehemently
asks us to leave while we can.
You turn to your friends and plead to go home, after all if the old
lady thinks we are in danger, we probably are. She knows much more
about what is going on in this house than we
do.
You ask the lady what the Master meant by "he knows".