It is to be noted that an implied pronoun reference happens when we don't explicitly say the pronoun in a sentence, but it's clear who or what the pronoun refers to based on the context.
Instead of repeating the noun, we use a pronoun to make sentences less repetitive and more fluent.
For example, instead of saying, "Mary went to the store, and Mary bought groceries," we can say, "Mary went to the store, and she bought groceries." Here, "she" is the implied pronoun referring to Mary.
It helps make our writing smoother and avoids unnecessary repetition of the same words.
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What is an implied pronoun reference