This is the 13149th most frequent Spanish word.
preparase
"Prepararse" means "to prepare oneself."
The word 'prepararse' is reflexive in this sentence, indicating that the subject (Ella) takes action upon herself to become ready.
Ella necesita prepararse para el examen de mañana.
She needs to prepare herself for tomorrow's test.
Here, 'prepararnos' expresses a suggestion or need for mutual preparation among the group (inclusive of the speaker) before performing an action.
Debemos prepararnos antes de salir de casa.
We must get ready before leaving the house.
In this instance, 'prepararse' is utilized to show the habitual action of the individual in getting ready for a set objective.