well he might think she is little similar to his mom in the "teaseing and demon face :P" aspects ^^ maybe he suspects her for her power & strength..... but its not official information :P for Minato or Miya (for miya that minato knows abotu that unnesesery parts
)
But its really interesting what relations would they have after learning the truth... miya might start to think that minato after learning the truth might try to add her to his group :P..... Minato is a unknown ^^ since he is kinda scared of miya so I doubt he would risk in order to get clsoer to her...