Dear Annabel and Ivonne,
I wonder whether Mischa is barking at something in the water, barking at the water itself or perhaps the movement of the water. Has she always behaved in this way? Or did this behaviour only start to happen recently? It is possible unsure that Mischa feels uncomfortable or this is a about bodies of water. However, if it can recent change in Mischa’s behaviour, health indicate underlying neurological or your issues that should be investigated veterinarian.