Businesswoman (CEO of Enerwave)
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Fiona was the person who gave Walker the package and got them out of Inverness Station. She was last seen in a gunfight with a member of The Burn, giving Walker time to get away.
The gunshots stop soon after Walker is introduced to Charlie. She says that Fiona's "gone", implying that she was killed.
She was the CEO of Enerwave until she was removed. There was a massive restructuring of the company after it had suffered a financial loss of nearly 480 million pounds.