Bonine or Meclizine from her DR and take it before she gets on a boat, my friend who actually races sailboats with me weekly gets horribly seasick and tried EVERY home remedy on the planet including, ginger pills, gummies, wristbands etc etc at the end of the day the only thing that worked was drugs and the Bonine doesnt make her tired like Dramamine can. Also she needs to stay off her phone while underway, trying to read a phone makes people prone to motion sickness very ill.