<p>In this case: Irene talked to me about her new job and about why she left her old one.</p>
<p>is the second ABOUT necessary? I thought you only needed an additional preposition if each subordinate clause needed DIFFERENT prepositions. For example, Irene was puzzled by and concerned about Ellen.</p>
<p>Now the second sentence makes sense because there are two different prepositions (by and about). But in the first, isn’t about repetitive when it comes up twice?</p>