I am a devout Christian and handle divorce cases.
However, I do not see how Christianity would make a difference in divorce proceedings.
In my experience, when the divorce is contested it is usually about money (split of assets/maintenance), children or a mixture of both. It is a lawyer's job to get the best "deal" for the client, without dirty tactics. Afterall, a lawyer's first duty is actually to the Court and not to the client. Christianity or whatever religion should not affect a good lawyer's professionalism.
Likewise, when I handle criminal cases my personal beliefs shouldnt come in the way of handling a client's defence to the best of my professional ability.
Anyhow back to divorce, most contested proceedings also end up being settled by mediation. I suppose a difference could be the lawyer suggesting a christian background mediator to help.
If you need my contact, pm me!
What does the OP mean by "her church doesn't allow her to divorce?". Why? Is the church their absolute law and order keeper? Sorry,one totally clueless human here. I thought I was old and wise with a deep understanding of the world lol (sarcasm of course) . Apparently- I am not.
Some deeply religious people do not want to go against the teachings of their church. Some churches that do not liberally permit divorce and remarriage DO allow it in the case of adultery. So the OP may want adultery, for example, as the grounds for divorce or somehow officially stated in the divorce documents. The Wiki entry, while not perfect, has some examples:
https://en.wikipedia.org/wiki/Religion_and_divorce