Phyllis and her friend, Jean, were evacuees from London who lived with Miss Hardaker. On a Sunday in April 1943, she met Ace and they went to Maiden's Bay, against Hardaker's rules. She got in trouble with Miss Hardaker for it. Jean and Phyllis went back to Maiden's Bay and were turned into Haemovores to serve Fenric.
They returned to Miss Hardaker's cottage and drained her of blood, killing her. Phyllis later marched with the Haemovores. She was killed when Fenric asked the Ancient One to kill all the remaining Haemovores. Both she and Jean dissolved and rotted into slime and dust before Ace, who watched in a mix of shock, horror and relief. (TV: The Curse of Fenric)