how much does it take?

I realised Mrs Hon has been getting frustrated easily with our class recently. Although so, I've never thought that she has given up on our class. When she let out the news, I'm stunned. She's one of the best teacher i ever had. Her patience towards student, teaching method, every time she shared her real life experience, everything & everything. I just cant seems to appreciate it.. Until now, when she has given up on us. As a teacher how much disappointment has she gets from our class to give up on us? I'm remorseful... so what? it's too late? Putting myself in her shoe, how has she felt.. I know I'm also one of the student that has disappoint her alot. Every class test she gave, without fail, I'll fail it with a single digit, but also without fail, she will write some remarks on the paper to encourage me. I had never appreciate it,I'm sorry. I know, other than being remorseful here, right now, I should be studying hard and I promise, I promise I'll not let you regret having me as your student. I'll pass the EOY geography examination with flying colours or at least pass it!