I always wonder if I have made mom happy

I had promised my parents and God as a child that if anything ever happened I would care for sister, Doris. When mom got sick and before she passed, a "gag order" was put on me and I was restricted in what I said to her in the hospital. She passed in 1996, and I was granted guardianship of my sister, Doris. She has been living with me ever since. But since I have never dreamt, or felt mom's pressence, I wonder if she is happy with what I have done?