This is the 99th most frequent Polish word.
swoich
"Of one's own" or "his/her/their own" (possessive).
The word 'swoim' here refers to 'her' in a reflective possessive sense, relating to the subject 'Ona' (she).
Ona pomaga swoim przyjaciołom.
She helps her friends.
The word 'swoich' here is used to indicate the possessive relation of 'obowiązkach' (duties) to the subject 'On' (he).
On pamięta o swoich obowiązkach.
He remembers his duties.
The word 'swoich' connects the object 'rodziców' (parents) to the subject 'Dzieci' (children), showing possession.