At 3:38-3:39 and 3:42-3:43, when Dierdre, Michelle, and James enter the Quinn family's kitchen, Erin is very clearly bent over while standing on a chair as Ma Mary Quinn sweeps up the broken mug. However, at 3:44, when the camera angle shifts to behind Dierdre and shows the Quinns, McCools, and Clare all standing on chairs, Erin is very clearly standing up straight, with no time for her change in posture.