Sins you mention Daisy's eyes blinking, is this proper blinking or the eye flicking from side to side (diagonally) called nystagmus? The one feature I have noticed in my two with EF is that their eyes are usually wide and staring. I have seen nystagmus in one of mine who had a vestibular attack, also one who had something similar and ended up with a head tilt. This was in the 90's and the first time I had seen anything like this in my cavaliers.