Never had surgery like this, but LilyFestre is right about staying ahead of the pain. They say the same with arthritis pain (which can be like a throbbing toothache in numerous joints). You use different combinations of pain killers at the prescribed times. GP or nurse should be able to help with the whats and hows.

As soon as she is permitted too, ice packs may be very helpful. Frozen peas in small ziplock bags work best.

As a last resort and I pray it never comes to this. If she has the lasting residual pain, many people do get accustomed to it. It has taken me 4+ years but I am more able to cope with pain this year than I have been in past.

Still praying for her quick return to good health and happy new life in North Carolina.