Just to let you know? This mail opening...huge problem with my H. I saw stuff as ours, he saw it as his. I did not ever open cards, letters (private), but bills or insurance or whatever I had no problem. He did.
It was a line you shouldn't have crossed in opening the letter, given where you are, but i really suspect you know that.
I also forgot to say CONGRATS!! You will do really well at Uni, you have all the determination already