Answer:
The prepositional phrase in this sentence is in the pocket of her dress
Step-by-step explanation:
A prepositional phrase includes a preposition an object that could be a simple word or a group of them, they offer additional information about the object they are connected to this could be about when or where something is or happened as well as other kinds of specific information, in this example we have two prepositional phrases "in the pocket" and "of her dress" the prepositions are in and of.