Yes Sins, I was thinking Episodic Falling. My Thomas has EF and can go for ages without an episode, then out of the blue will have one. Often they are brought on by excitement or after a walk, especially when it's hot. He seems to have an attack every 2 or 3 months and only started about 3 years ago when he was 5 years old. He is always perfectly fine afterwards thank goodness. Hope it was a once off for Daisy. x