She dropped the accusations, it doesn’t matter what some guy that Depp fired is saying.
Again, police on the scene who said in a deposition that they saw nothing like that and that she said nothing happened.
While I'm won't say I know for certain, someone who is saying that they do know for certain would have to reconcile those officers and that they said it in a deposition.
If we infer Depp committed spousal abuse from flimsy evidence then we must also infer Gunn committed rape and pedophilia.