Hi Angel!
One is never too young for a past life reading. Of course, you grandmother may not know this- it's neat she is open to reincarnation and talks about it with you.
I have no idea how old you are, but kids especially have tremendous past lives memory recall- this forum is very proof of that. In fact, the younger you are, the less clouded one's memory and soul is. The fact is that many times as we get older, especially if we don't nurture our soul, it is harder to recall past life experiences.
Susie
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Free will allows me to choose my path, but my Higher Power lights the way....