I'm toying with the idea of growing potted fruit trees. There are several varieties that can be grown in a pot indoors. I have a spare room that gets the southern sun and I think I'll take the plunge this coming year.
I am truly surprised that you have any fruit trees in that kind of weather. And I feel your loss. I hate to lose a tree - any tree. And to lose a fruit tree would bum me out for a very long time.
That will be fantastic for you to grow potted fruit trees. I took the chance this year and planted a raspberry in a pot (outdoors), so I shall see how it fared over the winter, I am not holding out much hope... it was an experiment for while I love raspberries, I hate the way they sucker up and take over my whole garden, so I have been attempting some type of control.
Good luck in your efforts.