Thank everyone, i might buy some chamomile and give it a go myself and she can have some, she likes her milo or warm milk in the morning but i wouldn't mind giving her a variety and then maybe every now and then some green tea wont hurt her.
I can just do mine and then poor some off and water it down, my younger brothers LOVE green tea hot or cold and even take ti to school in their drink bottle... lol they are 7 & 9 though.