I have a few questions regarding nikkah.
1. What are the characteristics of Mahr? My fiancé is Pakistani and I’m Afghan. We thought this would be easy but cultural differences, difficulties in language and insufficient knowledge on my side, make it hard to be on the same side
2. As a woman I can state extra wishes, correct? Like asking for the right of divorce, keeping custody for children, not asking for permission when leaving the house or visiting family? Where can I read about this? Is it impossible what I’m asking for?

1) Mahr is given by the groom/husband to the bride/wife, and should be appropriate for her social status. It is something of value you ask for.

2) You can also ask for anything else that is reasonable, including the proxy of divorce, as long as it allowed in Islam. You can consult the website of your marj’a for more details