Was thinking of getting a book for my niece, and recalled one that was about the right reading level, but I can't recall the name to save my life.

Set in the very early 1900s in New York City. The main protagonist is a young woman who has been left a letter by her estranged and now dead father that points to both a treasure and his murder. She teams up with a young photographer and together they try to unravel the mystery before her father's murders find the treasure or kill them. I *think* the title had Rose in it, but I am not sure and my searches have all failed.

Anyone recall this?