Video shows Evander Kane allegedly hitting his ex-wife?

To support her claims, Kane's ex-wife, Anna, has just posted a video on social networks in which the woman can be heard arguing with a man (whom she identifies as Evander Kane) and the whole thing is followed by screams of pain. (as if she had received a blow from the man in question)

Here is the video in question, which is making the rounds on the web right now:

You can't see much, but the sound is pretty clear.