Complex sentence: Dorothy's business sense had kept her operation in good graces with the local community; she catered to many powerful individuals, including state legislators, donated to children's causes, and routinely tipped off police if she noticed drug pushers in the neighborhood.
Split into simpler sentences: Dorothy's business sense had kept her operation in good graces with the local community. She catered to many powerful individuals, including state legislators; donated to children's causes, and routinely tipped off police if she noticed drug pushers in the neighborhood.