Complex sentence: Robyn's water suddenly breaks, so Lance, Harper, and Candace try to rush her to the hospital; however, they get stuck in traffic and Lance delivers the baby in the backseat of his SUV.
Split into simpler sentences: Robyn's water suddenly breaks, so Lance, Harper, and Candace all try to rush her to the hospital together. However, they get stuck in traffic and Lance delivers the baby in the backseat of his SUV.