Complex sentence: When Denise leaves with her parents, her dad says that he is pulling her out of P.A., even though she is about to graduate, but her mom stops him and says that is Denise wants to sing, she should sing.
Split into simpler sentences: When Denise leaves with her parents, her dad says that he is pulling her out of P.A., even though she is about to graduate. Her mom stops him and says that if Denise wants to sing, she should sing.