Will I or my family be held accountable for the death of my Mongol daughter—who passed away after a delay in her medical treatment for a health complication following heart surgery—and how can we atone for this sin?

It is hoped, by Allah's pardon and generosity, that He will not hold you accountable for what was mentioned, as you did not neglect to help her, believing it to be an ordinary ailment. We ask Allah to mend your affliction and compensate you with what is better.