Get some battery operated toys & have LONG foreplay sessions. Maybe tie her up before you get started! Oh yeah, get some of the self heating lube that tingles, they make a 'his' & 'hers' version. Slather the toys up with that before you use it on her! (Forgot the name, on the shelves by the k-y jelly)
.....What!?!? Hey! So what if I'm old! I still remember! Hehehe!

P.S. BTW, make sure she has 4-5 orgasams before you fuck the hell out of her. That should do it. Roll playing first might help too!