My previous training is that I was a bouncer at a strip club,..
So you want to place yourself in a situation - domestic violence - that makes even the most experienced police officer nervous, and your training is that you were a bouncer at a strip club?
I don't know if its still the case, but a long time ago a LEO friend told me that the most dangerous situation for police officers was a "domestic dispute". He told me a bar fight was a piece of cake compared to stepping between a husband and wife.
I am not in any way disparaging your talents and capabilities.
I would strongly suggest that you talk with a lawyer and get a very clear idea of your risks. If her benefactor has "more money than G-d", he won't mind paying for you to talk to a lawyer.
I would also ask yourself - if he has more money than G-d - why isn't he hiring some corporate security outfit? I would think that would offer him more (legal) protection than paying you.
Mike