Forward Maya Hayes came off the bench to score twice while Leroux and McCarty added a goal each in a 4-1 win over England in Flensburg, Germany.
Beth West and Christine Nairn both had two assists.
The U-20s fell behind by two goals in the first 10 minutes of their match against Germany before rallying with two goals to earn a 2-2 tie in Hamburg.
Leroux had the equalizer with just five minutes left.
The match concluded a nine-day training camp in Germany.