That is the "I know you are there and I know what you are doing and I tolerate it as part of the job, but it would be unwise for you to come even 1 foot closer." This was the attitude she finally achieved to help her deal w/these vultures who wound up being the cause of her death.
William proposed to Kate while in Kenya, offering her the sapphire and diamond engagement ring that had belonged to his mother, the late Princess Diana. The ring is a 12 carat oval sapphire surrounded by 14 diamonds in 18K white gold. Their engagement was announced on November 16, 2010. Diana would have approved of William's choice.