First, Marta, don't worry about your English--it's quite good, and you express yourself very well. I read a lot of HP fics in French, so I know how it feels to worry over expressing myself adequately in a review in French. You did marvelously!
When a reader tells me that they 'lived' the stories with the characters as they went along, well, it makes me feel as if I did something right, because that's one of the things an author wants to hear. I'm glad my Harry and Severus resonated with you, and I'm humbled that you liked the story so much. When I first read your review, it made me feel very good. So, thanks for reading, and for taking the time to tell me how it made you feel. It's so very appreciated!