How bad were the symptoms at birth and how long did they last.
My instinct without meeting her is to say it is purely from being hand reared as I have seen many hand reared foals exhibit the same behaviour as this before.
When she was being fed was she kept alone or with any other animals?
It is very interesting to hear your story as I did extensive research into hand reared foals after working with one many years ago and seeing the strange behaviour he showed made me want to look into it more.

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