Welcome to the Wefugees Community and thank you for your question.
I have to agree with Great Man. Unfortunately, family reunification is not possible when holding the residence permit according to section 25 (5) as section 29 (3) third sentence of the German Residence Act says:
The subsequent immigration of dependants is not permitted in the cases covered by section 25 (4), (4b) and (5), section 25a (2), section 25b (4), section 104a (1) sentence 1 and section 104b.
Nevertheless, I recommend you to contact a Migration counseling office to assess your individual conditions and your wife’s perspectives. Maybe you can find another way for her to come to Germany (study program, work etc.) or a way for you to “improve” your type of residence permit here.
I’m sorry that I can not give you more positive news.
However, I will also link my dear colleague @mbeon-Èanna here. Maybe he can correct me or add some additional info.
In any case, please don’t hesitate to get back to us with any further questions.
All the best,