how to save hinata i cant do it
ideally, don't ever let her be taken and grind up strength so you can win the fight. (at which point it costs 20 dollars per week)
or else you have to do a massage quest where you can buy a book that'll let you improve your massage skills, and have to massage the madame at the Daimyo's estate and get her help to rescue Hinata. (can only be a limited number of times.) **if you piss off madame, thats game over, she wont help you anymore.**
Don't let Hinata get taken... it's essentially a game over route.