I tried to give some information on your questions already in your earlier opened thread. I would like to recommend you to use the comment function next time if you want to discuss your situation further. This will help us to keep an overview.
Regarding your communication and trust issues with your lawyer, it could be useful to involve a counselling office in this. Hiring another lawyer usually produces not only more costs from a financial perspective. It can also cause confusion and chaos and should, from my experience, rather be the last option. If you follow this link, you can find contact details of several counselling services in Sachsen-Anhalt. I would recommend you to contact an organisation offering "Gesonderte Beratung und Betreuung (gBB)". They seem to be specialised on people struggling with their residence permit in Germany. Regarding your girlfriend's health problems and the jobcenter (you opened another thread on this topic), it might be the best for her to get some individual advice and support as well. She may also contact an office offering the "MBE" counselling services.
I hope this helps and please don't hesitate to get back to us with any further questions.
All the best,