In Fahrenheit 451 why does Mildred require emergency service?

Answer 1

Because she has taken a whole bottle of sleeping pills. But she doesn't remember when she wakes up the next morning that she has.

Answer 2

Mildred requires emergency services in Fahrenheit 451 because she attempts suicide by taking an overdose of sleeping pills. This act reflects her deep emotional distress and existential crisis, which is a common theme throughout the novel as characters struggle with the oppressive and superficial society in which they live.