Your blog expresses heartfelt gratitude towards your friend Sana and highlights a significant lollipop moment in your life. It effectively conveys your appreciation for her support during a challenging period and the impact she has had on your life.

The blog maintains a warm and emotional tone throughout, which makes it engaging and relatable. The quote, "Friends are the siblings God never gave us," adds a nice touch to emphasize the importance of your friendship.

However, you can enhance the blog by providing specific details about the challenging situation you faced and how Sana's support and advice made a difference. Sharing a personal anecdote or experience would make the narrative more vivid and relatable to readers.

Additionally, while you mention Sana's heartfelt and encouraging response to your letter, you could consider sharing a brief excerpt or a sentiment from her response to illustrate the impact of your gratitude.

Overall, it's a heartwarming and appreciative blog, but adding a bit more depth and specific examples would make it even more impactful.