how does mrs. pearce feel about the professor invites in to talk to his machines?

Mrs. Pearce believes that some of the people he invites in are rather odd.

MRS. PEARCE. "Well, sir, she says you'll be glad to see her when you know what she's come about. She's quite a common girl, sir. Very common indeed. I should have sent her away, only I thought perhaps you wanted her to talk into your machines. I hope I've not done wrong; but really you see such queer people sometimes-- you'll excuse me, I'm sure, sir--"