Sounds like your husband mistakenly assumed that the end of radiation was the end of suffering!

Wrong!!!!!

The end of radiation isn't even the end of the internal baking that is still going on -- Have him read the directions on a microwaveable meal, the part where it says to let the food stand for X minutes after the magnetron has turned off -- The stuf is still cooking, and so is your daughter for up to the next six weeks!!

Then the healing starts and it goes slowly with no apparent progress even week-to-week -- I am personally a full year out now, and people are still telling me I'm looking "much better lately".

Do the Mule Trick and tell him to reset his Expectations Timetable to reflect reality (The Mule Trick is where you whack him in the head with a 2x4 to get his attention )