Complex sentence: Lively ended up performing several of her own stunts, including a scene where her character breaks her nose, in reality Lively really did hurt herself in that scene and the blood on her nose is real.
Split into simpler sentences: Lively ended up performing several of her own stunts, including a scene where her character breaks her nose. In reality, Lively really did hurt herself in that scene and the blood on her nose is real.