Anna, I don't think you have anything to worry about! I love the way you ended your story.
But, I don't really have any advice. I never feel like I can write a good ending to longer stories. It always feels like I get frustrated wtih the story and just slap on an ending. So I spent all that time on the first 100+ pages and the last 5-6 are just cliche and boring and too fast. So, I guess, maybe I am not the person to answer this question.
