I JUST REWATCHED DR S1-3

i always wonder and had this question when they first visit cloud kingdom i always think why euphrasia is not decide to join the team when arin and sora ask her? if she join in early and not to decide join later she probably would have learned spinjitzu from rontu then helping the ninja cause why would they decide to make her join in season 4(if she is really join ninja team) i know this question isn't a much to you guys but i always had in mind. she probably make the ninja much easier when...