It is unclear to me from the context whether this is an excerpt of a fictitious letter from Churchill's mother to him as a child or if this is a real historical

It is unclear to me from the context whether this is an excerpt of a fictitious letter from Churchill's mother to him as a child or if this is a real historical letter. Edit: to answer my own question, it seems to be an excerpt from a book of actual letters between Churchill and his mother: https://www.amazon.com/My-Darling-Winston-Letters-Churchill/dp/1681778823 https://www.amazon.com/My-Darling-Winston-Letters-Churchill/....