For the first 3-4 days you should offer her food once each 2 hours during the day and at least once overnight. If she is doing well you can gradually lengthen the time between feedings until you reach about 3 times a day.
Water should be available at all times.
Especially during her transition to a new home and routine the most important thing is for her to eat. If she will eat the dry food that is fine, canned food , baby food or white chicken meat can be used as an enticement if she is not eating well. I would hold off on the use of supplements unless directed by a veterinarian.