This is the 524th most frequent Polish word.
odbyła
"Odbyła" means "she/it took place" or "she/it underwent" in English, depending on context.
Here, 'odbyła' refers to the fact that Anna conducted or took part in a conversation or meeting.
Anna odbyła rozmowę z dyrektorem.
Anna had a conversation with the director.
In this example, 'odbyła się' conveys that an event, the conference, occurred or was held.
Wczoraj odbyła się ważna konferencja.
Yesterday, an important conference took place.
Here, 'odbyła' indicates that Marysia completed or participated in a journey.