In ch.28, Eleanor says:

You must write to me, Catherine,” she cried; “you must let me hear from you as soon as possible. Till I know you to be safe at home, I shall not have an hour’s comfort. For one letter, at all risks, all hazards, I must entreat. Let me have the satisfaction of knowing that you are safe at Fullerton, and have found your family well, and then, till I can ask for your correspondence as I ought to do, I will not expect more. Direct to me at Lord Longtown’s, and, I must ask it, under cover to Alice."

The footnote in the Norton Critical Edition says "Ehrenpreis suggests that Alice is Eleanor's maid servant."