You'll be find at 40. I think my state is 35. Here are some tips to get her ready.
1) Quit taking out the trash, make it her job.
2) Get rid of the riding lawn mower and get a push rotary and make that her job to cut the grass. Not only will the other husbands be in pressed with your authority, you'll make a good impression on the global warming crowds.
3) Have a load of wood logs delivered and give her a 16# sledge and wedge. She should split at a minimum, 6 logs a day. It's ok to leave a few big pieces but remind her not to forget the kindling. Also stacking is very important for the drying process. Two stacks, one way in the backyard out of sight and a smaller one next to the house. Keep the smaller one to a two night use so shen has to replenish every other day in case it rains.

Good luck. If you follow these guidelines, she will be shooting 60 by the end of the season.