All 3 Uses

compose
in
The Book Thief
(Edited)

The obligatory Schimpferei occurred in the kitchen, and Liesel composed herself with the fact that there were still two left, and even better, one of them was the mayor, the wife, the books.
p. 161.4

composed = calmed or settled
They'd been learning about composers in school, where despite his obvious stupidity, Rudy excelled.
p. 299.9 *

composers = people who write music
Rosa was still in shock, but she composed herself.
p. 467.2 *

composed = calmed or settled

Definitions:

(1) (compose as in: compose a poem)
to write or create something with care
(2) (compose as in: composed of many parts)
to create something by arranging parts
(3) (compose as in: compose myself)
to calm someone or settle something
(4) (meaning too rare to warrant focus)
Specialized senses of compose include typesetting (preparing text for printing). There are many specialized senses of composition where context tells what something is made up from. Finally, in classic literature, compose may have been used to indicate settling a dispute.