As she starts to get the routine, start training her to also go while on the leash, in areas other than your yard, and on varied surfaces. That way, when you travel, she will have the confidence and experience to go wherever you need her to go. You and your dog will make lots of mistakes during this time. None of us trains with perfection. Your dog will do fine as long as you strive to be as consistent as possible.
Dogs are quite resiliant.
After she's done, then get more enthusiastic. Kennel her when you can't directly watch her. Do anything you can to prevent mistakes. You don't want her to get used to indoors as an optional place to go. It is MUCH easier to train her if she has little opportunity to fail.