well i’d say around 10-13 would be a good age for begining lucid dreaming for a child.
younger than that and you might confuse them, and children of a younger age are not good at all with abstract thought, spiritual concepts, etc… we don’t develop the capacity of abstract thinking until adolescence, and some people never develop it.
So therefore talking to her about spirituality before then will be pointless, as it’ll just more or less be brainwashing.
This is coming from developmental psychology, specifically piaget’s theory of cognitive development, and based upon observing my brother, I ABSOLUTELY AGREE… kids cannot understand “God” and metaphysical stuff at all, they just believe it because you tell them it’s true… t hey don’t really begin to enter a correct mindset to analyze that stuff in an abstract sense until adolscence… so it’d be really beneficial to hold out on giving her ideas of spirituality until she is old enough to try and at least semi-objectively look at what you are saying and understand it to a degree, and also have the capacity to question it, rather than take it as truth.
You know, if you can start a heavy philosophical discussion with her and get non black and white answers, then that’d be a good time.
Just simply telling her that you can lucid dream, and that you can explore a lot of great things about yourself and the world through it, though, that doesn’t really matter what age, probably past 7 or 8 though, as younger kids tend to not dream like us, I have heard.
The ideal approach would be to wait until she’s an early teen before talking to her about spiritual things, and you know, exposing her to all the other people’s beliefs, explaining to her that NO ONE IS RIGHT and everyone’s beliefs are equally valid.
That kind of thing, instill an open minded and intuitive approach to spirituality in her, but she has to be old enough to understand such things in the first place… hence waiting until adolescence.
Obviously if you are of a religion that commands you to witness to others and you fear for her eternal soul, that is going to cause some problems in the advice I just gave you.