Complex sentence: After laying low for some time after the bungled burglary, Billy returns to his home, but after a brief altercation with his mother and older sister (who has become the fatherless family's matriarch) he leaves again.
Split into simpler sentences: After laying low for some time after the bungled burglary, Billy returns to his home. But after a brief altercation with his mother and older sister (who has become the fatherless family's matriarch) he leaves again.