It would be <span>"D. Les"</span> Almost always, titles of books, plays, movies, etc. are capitalized. The fact that it's in quotations is irrelevant. Also the fact that it is in French is irrelevant.
Answer:
respected grandma,
it has been so long! how r u and grandfather ? for
me with the grace of God everything is going fine.
as u know winter is getting close and it will be more chilly then ever. I was wondering if u would come over to my house for this upcoming winter . I am missing u guys very much and also the time we spent together. so I would be glad if u spent this winter with me.
I guess this is it for today. I am really tired of all the works. I would like to close my pen right here and I would be patiently waiting for your reply .
yours,
someone
The subordinating conjunction in the sentence is "after".