Lol wagging tounge for half an hour
with fingering forget about the in out motion, it's in and UP, as if making a 'come hither' motion. The G spot exists and it's on the upper wall as if up towards the belly button. Get this technique right and prepare for things to get VERY wet!. Another reason why putting a pillow under her hips in missionary will drive her wild. Also pay lots of gentle attention to the clit and she will be putty in your hands.
You're welcome!