bethany farrell , 23 , from essex , died on the seabed in beginning her gap year .
two people who were on the boat when ms farrell died have taken to tripadvisor to slam wings diving adventures for the way they handled the tragic circumstances .
while one of the reviews criticises the way people on the boat were treated amid the panic , a friend makes the shocking claim that photos of the backpacker shortly before she died were deleted .