Hi Daria!
It's no problem at all! I know that constructive feedback, no matter how well-meaning and kindly-worded, can hurt and that it's anyone's instinct to defend the people they care about. I take no offense.
Like I said in my response to the first response, improvement comes through practice and mistakes! There are a lot of intricacies to English grammar and syntax, and you're already infinitely more competent with a second language than I could ever be. I hope I didn't discourage you; that was the opposite of my intention!
Again, I wish you both the best of luck!! Writing is an eternal journey, even for native speakers, and you're doing great.