Complex sentence: Emily's Entourage was founded her, her friends, and her family in December 2011 when Emily and her family sent a video to their friends and family and raised over $40,000 in one week.
Split into simpler sentences: Emily's Entourage was founded in December 2011 by her, her friends, and her family. The organization started in December 2011 when Emily and her family sent a video to their friends and family and raised over $40,000 in one week.