A letter, so confusing...

Dearest Brother Mark,
I can not believe how I seem to be thrown into this mess so quickly. I used to believe that after my education I would come before the dark lord and ask to be let into his service. And I used to wonder if he would except me, and if I would be good enough. I know that I am not technically a death eater, but I have already had a number of encounters with him. Some that were more odd, and some that at the very least made some sence. I have reason to think that the dark lord is working with Froyodor, he sent him a letter, and then left with him calling him his uncle. Last time he pretended that he was of relation to me, and he knew that I would play along. But Froyodor did not really play along, I am wondering if he is a disloyal servant, if he is I will ring his neck personally for defiling the dark lord. There are other posibilities however... I think I shall try to get a look at that letter if I can...
Your baby sister, Jessie.