When she sleeping snuggle up behind her and go from behind, go nice and slow. You can use one hand under her for the tits, the other hand for the clit, and going deep will hit the g spot. Kiss her neck, back etc..You might be able to reach the nipples.
When shes about to cum, roll over ontop of her from behind and keep going at the clit, then after she cums, pull her up into doggy and pound her hard. This works great. Since yout never pulling out and transition from the 3 positions is easy. My chick especially likes it hard and deep right after she cums.
She gets quite the kick out of waking up with me inside her. Though the last one freaked out sometimes.