So... like, yeah I understand that Hime knows the plot and has some ability to see the status window and using that she can manipulate other people, but if it's a matter between 'this girl has healing magic' and 'this girl knows things' then surely the simple test would be to have them both try to heal someone?
Like... okay, just take a dagger and stab yourself and then heal yourself in front of the King/Prince, done? Healing magic is supposed to be limited to the Saintess (hence the mage guy flipping his shit when she said she could heal a flower) so just use healing magic? I don't get why the Capital is looking for healers either, presumably they're just doctors and the Saintess has healing magic, it's not like normal doctors will be able to do what the Saintess can do, right? It just seems like there's a very very very obvious solution to what is happening and the current problems she's facing that is just going right out the window...