Dear Big Macintosh, Applejack, and lil' Applebloom,
If you're reading this, then I have most certainly have passed on to Elysium. I know it's sad to see me go, but don't go moping about me for the rest of your lives. I've lived a good life, and have absolutely no regrets.
Now that you're reading this, there's a few thing I wanna say to you three. Ever since my dear Green Apple left me, you three have kept this old mare happy for all these years. Ever since your parents died, you've looked up to me as a the mother you've never could know. You've made me the happiest mare this side of Equestria, and I'm grateful for it.
Big Mac, now that I'm gone, it's up to you to take care of Sweet Apple Acres and your sisters, as well. You're a good stallion and I have a lot of faith that you'll keep them safe. Also, take care of Mrs. Fluttershy as well; she's a real great mare, and the day you two married was one of the happiest moments of my life.
Applejack, be sure to help Big Mac around with the apple bucking; just don't try to do everything yourself like that one time. I remember the day you came back from Manehattan and got your cutie mark; I felt so proud that you found your calling here with us.
Applebloom, dear sweet Applebloom, you've grown so much over the years. I remember when you were looking for your special talent. You and those other fillies were always getting into a heap of trouble looking for your cutie marks. The day you finally found your special talents, you wouldn't stop hollering and hoping around. I still wish your talent involved apples, but I ain't gonna dwell on that.
That's all i really have to say to you three. The only thing left is that it was an pleasure to be your granny and that I'l always be watching you.
Granny Smith
P.S.: Please tell that Spike fellow at the Library thanks for writing this down. My eyesight ain't so good, but he was nice enough to write down what I had to say.