Complex sentence: On a family vacation, Barb finds Nicki's pills and assumes they are her daughter Sarah's, which forces Nicki to confess that they are hers and she's been on birth control for 4 years.
Split into simpler sentences: On a family vacation, Barb finds Nicki's pills and assumes they are her daughter Sarah's. This forces Nicki to confess that they are hers and she's been on birth control for 4 years.