She could easily have had her staff respond to the letter with a generic non-comital answer:
Dear , thank you for your interesting letter about , I am always glad when our younger generations shows an interest in the future of our great nation.
is important and requires careful thought as there are many different factors to consider.
My advice to you is to keep studying to be ready when the day comes when your generation will take the responsibility of guiding the nation forward, based on your letter you are well on your way on that journey.
Thank you again for your letter.
This is just something I wrote on my phone at 04:30 while I couldn't sleep, it promises nothing but is generally positive.