im so sorry that this is happening to you and dixie, i can tell you love her lots and am trying your hardest to find out what it could be.
hope im wrong but could she have some kind of brain storm just before this happens as she is her normal self before one of these episodes.
i think you are very good mummy and if nothing can be done for your baby (hope there is) then the most unselfish and kindest thing you can do is put her to sleep.
i know thats not what you want and i pray you dont have too but i can see your only thinking of dixie and thats what makes you a great mummy
wendy and rosie