Dear Allen,
[1] I just received your letter and I want to let you know my opinion of your plans for the future. I hope you won't take offense, but will accept what I say here as some fatherly advice.
[2] I was quite surprised when I read in your letter that you had decided not to finish your studies at the university. I realize that Peter wants you to marry him this summer. But with only one more year to go, you would be well advised to finish. A year is really a short time, and later you will be glad you postponed getting married.
[3] As you know, my reaction to Peter was extremely favorable when I met him. He's an exceptionally fine young man and should be a good husband. But I suggest you complete your education first.
[4] You are twenty-one, a grown-up young lady old enough to make up your own mind. This is something you'll have to work out yourself. As your uncle, I have always tried not to interfere in your affairs and I don't intend to begin now. But, my dear niece, please do consider my words very carefully before you decide. Whatever you do, though, Allen, you know I only want one thing for you, and that is your happiness.
Affectionately, Uncle John