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She won't take tablets. She has to take regular medication, and makes a terrible fuss over it. She doesn't drink milk either, other than in tea - but she drinks plenty of that. She'll eat the odd piece of cheese, or a yoghurt sometimes, but that's about it. I'm not sure if that would be enough - or perhaps, as yoga says, an iron deficiency could be the problem. Thinking about it, she doesn't eat much that contains that either.
Thanks for your help. :o)