Complex sentence: Eventually, her uncle (Chris Cooper) is found who, along with his wife Francine, are professionals studying carpenter ants and have no children of their own, although Francine does have kids from a previous marriage.
Split into simpler sentences: Eventually, her uncle (Chris Cooper) is found. He and his wife, Francine, are professionals studying carpenter ants and have no children of their own, although Francine does have children from a previous marriage.