Camp Overlook has a bunch of quests in the 47-48 range. But you may have to do a story quest around there to open them up first.

You can also do level 45 levequests at the settlement east of Revenants Toll in Mor Dhona, I dont remember the name.

Other than that what the posters above me said is accurate. Though I hate fate grinding with a passion, it is good exp if u can press 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1. Do that in every fate for guaranteed gold.