I think her reaction is inappropriate but considering her character I can understand it. My main problem is that we can't call her out about her actions. We should have gotten a dialogue optionn after she threw us into the lake and another one after she threatened us. Instead Geralt just accepts this.If you consider all what happened a few days before, yes, i understand it too.
An again, Yens reaction is all in all more harmless. Other people would react different and would not be so calm.
Support this, i totally .gif