Complex sentence: After Lola's father arrives and they explain what happened, Stu gratefully takes them all back to the party, where Ella forgives Lola for lying and the two girls see Carla, who sees them as well and looks upset.
Split into simpler sentences: After Lola's father arrives and they explain what happened, Stu gratefully takes them all back to the party. Lola and Ella see Carla, who sees them as well and looks upset.