«سَأَلْتُهَا ... فَزَحْزَحَتْ ... وَسَاقَطَتْ»
I asked her; she then moved something aside and let pearls fall.
Saʾaltu is first-person singular perfect, with -hā as its object pronoun referring to the woman. Zaḥzaḥat and sāqaṭat are feminine singular perfect forms; the woman is now the actor.
These changes in verbal person keep the story clear: first a request, then her response. A focused grammatical observation is enough to clarify the verse without turning it into a word-by-word parsing exercise.