Emma Hayes admitted her side were complacent after Chelsea survived a second-half scare in their 3-2 win over Reading.
The Blues dominated the first half and were three up at the break, Fran Kirby opening the scoring before a Jelena Cankovic double. But Reading very nearly stole a point, silencing the Kingsmeadow crowd through Sanne Troelsgaard and Amalie Eikeland.
Chelsea had started superbly and looked to be coasting to the win. But as the snow made conditions tougher on a wintery Kingsmeadow pitch, Reading fought back to force a close finish.