Have you tried doing a search for Rhose Roottree in the search engine? There's a somewhat general hint there that gives you a push in the right direction when it comes to how to make discoveries in this game.
When you do a search for Rhose Roottree in the search engine, there is a mention that you can sometimes find more information about people by searching for things like brand names associated with them. That will help you solve the first puzzle.
When you search for the Roottree Sisters it mentions that they specifically have a job associated with one brand of clothing. That's a good place to look into.
