There are many unscrupulous bg's here. It's the risks of the business. This story is a good warning to others! And as we all know, the farang never wins here! This is not the first story I've heard where the lady bruises herself and calls the police to scam money from the punter. They know all the tricks, and know the police will side with them or even be in (or be bought in) on the whole thing.
And pissed-off Thai women can be extremely vindictive and ruthless! My neighbor had a fight with a bg last night here. Whacked him upside his head with the TV remote and her shoe! She stormed off, but I wouldn't be surprised if she returned at some point, possibly with some friends, looking for revenge. And I warned him of such, and to be vigilant when in the area where he found her!
I feel bad for Malibu, but as hard as it may be to do the best thing is to put it behind you, as others have suggested. I hope things work out for you, but is best to forget it and be warier next time around mate!