My brother-in-law got a bird and complete fixings prepared by Wegman's one year. It was actually quite good. He was a divorcee at the time.
Not for anything, but my wife will not touch a raw turkey. Every time we have one, I am in charge of the bird, stuffing, giblets, gravy, etc. I usually also make taters, yams, and green salad. Her job is desserts, casseroles, table setting, etc. Everyone pitches in for preparation and cleanup and it makes it a lot less like work, and a whole lot more like family. .
If it really bugs you, send 8x10 photos to your SIL to tape to the chairs in front of the frozen meal.