Conversation so far:
What led to Hattie McDaniel's death?
In August 1950, Hattie McDaniel suffered a heart ailment.
What did Hattie McDaniel's heart ailment lead her to do
Hattie McDaniel entered Temple Hospital in semi-critical condition.
What did entering the hospital do for Hattie McDaniel's heart ailment?
Hattie McDaniel was released in October to recuperate at home, and was cited by United Press as showing slight improvement in her recovery from a mild stroke.“

Question: What did she end up dying of
Self-contained rewrite: What did Hattie McDaniel end up dying of?