I can understand your pain. I too recently lost a loved one who passed away much young. Now I seek refuse in this book. I feel ashamed that I didn't read it despite being a Hindu till I turned 40.
You can refer to the following link. True philosophy begins at shloka number 2.11. However, I will recommend reading from the beginning to understand the context.
You can refer to the following link. True philosophy begins at shloka number 2.11. However, I will recommend reading from the beginning to understand the context.
https://www.holy-bhagavad-gita.org/