Please help answer this question, thank you

(b) Michelle Garnaut is a celebrity chef who operates "M on Market," a very high end and successful restaurant in San Francisco. Her sis- ter Mandy was always jealous of Michelle when they grew up together, and became even more jealous when Mandy's modest neighborhood restaurant failed and went out of business. In her anger, Mandy post- ed 3 reviews of M on Market on the Michelin Guide website, under fake names over a 10-day period, falsely claiming that each purported customer had become seriously sick after dining at that restaurant. M on Market's reservations declined by 20% for six months. Assuming that good computer forensics could establish that Mandy posted the fake reviews, discuss what claims Michelle could bring against the Michelin Guide and/or Mandy, and what damages, if any, she likely could recover