Mystery Book with a Cousin, Coffee House, and Traps…

Here is another question about the identity of an author. This letter is from Paula:

“I bought a book in a Maine Mystery Bookstore by a local author-don’t remember name-storyline, woman had a coffee house which burnt down and she opens one in a old train station where her cousin tries to murder her….

… her friend (maybe a realtor) finds an old building near an old train station (which may be a stop again on the train schedule) that can be converted and her cousin (?) sets mysterious traps which cause accidents-maybe trying to murder her so he can have the building. Along those lines.

Does it sound familiar at all? I think the author was a local.”

If any of you have an idea of the author of this book, which might be set in Maine, please post a comment.

Thank you – in advance!