I've been thinking about it and I expect my wife to stay at her current job.
Have you shared your expectations with her yet?
No, I don't want to hurt her feelings.
You can't expect someone to stay at their job if they are unhappy or want to change. You should talk together and find a good solution that works for both of you.
I just don't want to hurt her feelings.
If you try to force your wife to stay at a job she doesn't want or where she is unhappy then she will undoubtedly hurt her feelings. If you have a conversation as a couple the two of you will probably be able to come up with a solution that satisfies you both, however, it's ultimately her decision.