Goals from Lauren James, Katie Zelem and Amy Turner helped stretch United’s winning run to five games in all competitions, and make it two from two in the tournament, at Southport’s Haig Avenue.
Casey felt her team weren’t completely on top form against the Toffees, but was delighted with the defensive solidity during a tough outing on Merseyside.
“It’s a good sign that when you haven’t played well, but you come away with a 3-0 win and another clean sheet,”
the boss told MUTV after the match.
“We know if we can be structurally right and keep clean sheets, it gives us chances to win the game.