I can give the full physiologocal process causing heart failure, i think you simply want the basics and in your obvious grief, I want you to know thw pain I feel for you.
The truth is: when heart is dmaged and works overtime day after mont after year, it become less sfficient and begins to fail, Youdughter was so young-and i can just imagine the pain you must feel. The death was probably assessed correctly, and her heart simply couln't bear th worklooad.
Does that help?
I hope my information is helpful. If you have more questions, just ask! I will gladly help, otherwise please click "accept".
Positive feedback and any bonus would be appreciated. Thank you, Christy