you don't have very much weight to lose. which means, especially coupled with jillian micheals workouts, that you're not going to lose very quickly. ideally you want to be aiming for about a half pound of loss per week. which means you need to do some math. www.sparkpeople.com/resource/nutrition_art
figure out about how many calories you're burning and where you would be maintaining with or without exercise. then subtract about 250 cals from that to get where you should be eating. because you have so little to lose you do need to be eating most of your exercise calories back. if you want to skip some more now and again as a little loss booster, that's fine, but regularly you should be eating most of them back unless you have decided to eat at maintenance and use your exercise calories directly as your only deficit.
you might try to lose a pound a week [500 cals a day deficit], but watch out for these not quite a binge type episodes. when your body really isn't getting enough calories it's easier for them to happen because you're trying to make your body work with too great of a deficit. and your body's response to that is to eat, and whatever is nearby in the quickest manner possible. so that the amount it's short can be realistically made up by the fat deposits you have. if you want to aim for a little higher deficit you might try 375 less as a middle ground between the pound and the half. but again, as you start to lose, start bringing that number down closer to the half. the less weight you have to lose, the slower it goes and the more you need to be eating closer to maintenance.
-google first. ask questions later.