I read most of power of three in my old schools library cause thats all they had at that time so I mainly got second hand descriptions of squirrel in general but honestly, adored her then and still adore her now while knowing alot more about her entire story then I had at that time.
I saw something at somepoint about redtail being sandstorm's dad and ran with it and have been imagining squirrel with a really fluffy red tail for years now tbh-