It is a personal choice. I live in a home without a basement and am very happy. Actually don't have to worry about flooded basement, nor need the extra space which tends to become holding areas of "junk".
I love my home and convenience of everythiing being on one level.
If she loves the home and location; then she should buy it.
P.S. My home is always warm in the winter with hot water base board heat.
Best wishes, Mary Nelson