Complex sentence: Drouet tries to skirt the issue but it is becoming more and more difficult so he tries to distract her and invites Hurstwood, whom he had run into but sheer coincidence, into their home.
Split into simpler sentences: Drouet tries to skirt the issue but it is becoming more and more difficult to do so. He tries to distract her and invites Hurstwood, whom he had run into by sheer coincidence, into their home.