Upvote:1
As long as your wife is honest in her application and mentions that you have already applied (and gives all details like the numbers of the case) you will not get in trouble for deception. Plans change and officers will understand that your daughter did ask for her mother after you had applied.
But the case of your wife is much less strong than yours. In your case you had your wife as tie to your home country, in the case of your wife there will be no spouse left at home and the only ties are the much weaker ones of parents and an adult son.
So it may turn out you get your positive result and your wife does not, or it may be that you both get your visa. We have no way to predict what the result will be.
(If you have gotten the visa before I posted this answer, please come in and post what the results were.)