In Valentine...After the girl has been thrown to the glass..and after her head was slammed on the slanted piece of glass...they show her for about two seconds...it looks like she is still alive though because her stomach and chest are falling and rising rather heavily...she is breathing very hard when she shouldn't be. I also spotted another breathing error...when one of the girls was in the hot tub, they show her at the top..gasping for air...ad then they show her again a second later...and he breathing seems to be fine. I just notices those two things.