Anna must have returned home because Libbie opens her letter asking Anna why she didn't write to let them know that she got home alright. She goes on to say that Sarah Ann is slowly continuing to improve but that she (Libbie) has not been feeling well herself.
For more see:
Camfield Family Letters
Descendants of Sarah Ann Wisner
Camfield, Elizabeth Warner (Batavia, MI) to “Dear Auntie and all”
[Anna Camfield Carlisle]. Letter. 15 March 1899. Digital Images 1-2.
Privately held by Apple, [ADDRESS FOR PRIVATE USE,]
Snowville, New York. 2009.
[Carlisle Family, Box #1, Correspondence, Jan - Mar 1899,
Bentley Historical Library, University of Michigan. 2008.]