JoanP., pg. 468 "Cynthia, what makes you dislike Mr. Preston so much?" "Don't you? Why do you ask me?, and yet, Molly, "said she, suddenly relaxing into depression, not merely in tone and look, but in the droop of her limbs_ "Molly, what should you think of me if I married him after all?"
"Married him! Has he ever asked you?" But Cynthia, instead of of replying to this question, went on, uttering her own thoughts. "More unlikely things have happened. Have you never heard of strong wills mesmerizing weaker ones into submission? One of the girls of Madame Lefebre's went out as a governess to a Russian family, who lived near Moscow. I sometimes think I'll write to her to find me a situation in Russia, just to get out of the daily chance of seeing that awful man!"
"But sometimes you seem quite intimate with him, and talk to him__" "How can I help it?" said Cynthia, impatiently. Then recovering herself, she added: "We knew him so well at Ashcombe, and he's not a man to be easily thrown off, I can tell you. I must be civil to him; it's not from liking, and he knows it is not, for I've told him so. However, we won't talk about him. I don't know how we came to do it, I'm sure: the mere fact of his existence, and of his being within half a mile of us, is bad enough. Oh! I wish Roger was at home, and rich, and could marry me at once, and carry me away from that man! If I'd though of it, I really believe I would have taken poor red-haired Mr. Coxe."
"I don't understan it at all," said Molly. "I dislike Mr. Preston, but I should never think of taking such violent steps as you speak of, to get away from the neighborhood in which he lives." "No, because you are reasonable little darling," said Cynthia, resuming her usual manner, and coming up to Molly, and kissing her. "At least you'll acknowledge I'm a good hater!" "Yes. But I don't understand it."
"Oh, never mind! There are old complications with our affairs at Ashcombe. Money matters are at the root of it all. Horrid poverty_ do let us talk of something else!"
#4. Cynthia says: “or some one else may turn up and say I’m engaged to him”. What’s that about?
So, I am assuming that Clare has promised Cynthia to Preston, for what ever money matters he helped her out with at Ashcombe. Preston is aware of the fact Cynthia does not like him, yet he is holding her to the contract, Clare and he obviously made. IMO
Yes, Cynthia wants the engagement to be a secret to keep Preston from finding out. And as you can see, I believe Cynthia would rush and marry before Preston could know of it, to put a stop it. My first suspicion, was when Molly told Preston that Cynthia was coming home, and he assumed she would be living at Ashcombe. WHY would he assume that, knowing Clare was married to Mr. Gibson? That always puzzled me. But Mrs. Gaskell drops crumbs along the way, we just have to be alert to them, because some are very subtle.
Ciao for now~
p.s. We are once again getting hit with at least a foot of snow here in Toledo, Ohio. Level 3 snow emergency, so NO daycare kids for me today! I can't read ahead in the book, so how will I enjoy an unexpected day off to myself?