dump the machines and hit the db's and barbells. Don't be afraid to hit them. They will give you results like you wouldn't imagine and in a nice amount of time. Start with 3 exercises 10-12 reps per muscle. Hit them hard too and concentrate on your form. Make sure the weight is something you can manage so you can target those muscles and SQUEEZE! Once you get comfy with this then up the weight and add another exercise if you like.
I use the machines every once in a while but because the gym is overloaded and for lack of standing of around while my muscle loses its pump I hit something. If not my wo partner would have black and blues all over, lol.....
Post your diet... lets see what and how often you eat. If you get a chance take some pictures and post them. Also keep them to check on your progress.
Good luck chic
and the most important thing you said in post is that you know you can't target a specific area. Its a whole body and mind effort!
***also go to the female section. You can find alot of journals with exercises there. But keep it simple. Use the basics. I see alot of women in my gym using the dam ball to do some freaky exercises. They show no results AT all and they are an accident waiting to happen. I find that ball good for stretching and doing crunches, thats about it. IMO. and quite frankly I rather do my crunches on a bosu or leg lifts off a bench.