Regretably, I am completely unaware of the matters you mention. It is my understanding that Fanny and her husband Rev. DAVENPORT imported the first printing press into Siam and published Bibles there. The idea that she also toured Siam and met noted personalities of that time seems very plausible, particularly given her penchant for writing.
Unfortunately, I haven't fully researched Fanny and her life and family. But I understand that some work has been done under the auspices of the Baptist Historical Society. I would encourage you to seek additional information from that organization and let us know what you learn!