Complex sentence: She is impulsive and adventurous, and sometimes prone to mischief that let Jennifer, Kevin, Lolo, and Tony, always says her first name out loud, when she gets clumsy they say "Pepper!" and somehow she's truly gets the message.
Split into simpler sentences: She is impulsive and adventurous, and is sometimes prone to mischief that let Jennifer, Kevin, Lolo, and Tony always says her first name out loud. When she gets clumsy they say, "Pepper!" and, somehow, she truly gets the message.