Theory: Rin was related to either the senju or uzamaki clans

[Danielgf04]

I also think she belongs to one of those clans, being my guess,as always, Uzumaki!

Uzumaki are perfectly capable of being jinchuuriki! As matter of fact they might be the best doing it, as they don't die after they get their bijuu extracted!

I also think Rin belongs to the Uzumaki clan because it has to be a reason on why she was chose to be the jinchuuriki of the Sanbi!

If there isn't any and it could have been anyone else, why did the mist decide to kidnap of the Yellow Flash's students? They must have been anxious to get their asses whooped then!

 

[Omega]

She is probably uzumaki, if she isnt I would want to know why she was targeted to be the jinchuriki, however she must have had strong chakra to host a tailed beast. Good idea