Dear @Kesskester28,
Welcome back to the Wefugees Community and thank you for reaching out to us.
I assume with "Betreuer" you refer to a counsellor? If I am right, your friend may use this search engine to find a close-by refugee/migration counselling office. In Germany, a "Betreuer" (or gesetzlicher Betreuer) is a legal representative for an adult person and determined by a court. The "Betreuer" is dealing with all kinds of important issues a person can not handle alone (anymore).
In case I did not understand your question correctly, please don't hesitate to get back to me.
All the best,
Meike