Ankles Up
When you’re on top of somebody or flat, you can’t always achieve full penetration, which is why adjusting her leg positioning allows for deeper contact. Put her ankles up over your shoulders! It allows you to go as deep inside of her as possible and hit her G-spot. The other important aspect of this is that, as a variation on “Missionary” it keeps eye contact at the maximum. Lots of gals like that too!