Question: No notice is paid to her coming and going in the house.
There are people who don't notice her.

Answer: it is not possible to tell

Question: We must do what we can." Through Tommy's mind flashed the assurance: "It's hopeless, and he knows it's hopeless!" The other looked up at him.
Tommy was unassuming and did not know what to do

Answer: no

Question: She could not be implicated "otherwise I should have heard some hint of it.
I heard that she has been implicated.

Answer:
no