This is not my opinion; more my nature of attempting to answer questions like these based on previous experiences. Again, not saying this is the case, or even that I think this is the case for Judkins situation:I don't get why she would hang out with him for 5 days before going to the police. That part damages her credibility IMO.
Victims of DV in the past in similar situations as these have made the case/defense that they have little to no control in a relationship; and that especially when traveling to places unknown, can feel limited in means to "escape" their abuser. They "don't have money or means" to flee. If they do have a support system, they are not in driving distance and can't come get them. They will stay with the abuser until a time they are back in a known environment where they have access to money/vehicles/safe places they know they can go to not just get away, but be protected from their abuser. To add, women who are in an abusive relationship with a man tend not to be trusting of, or looking to, other strange men for help. When the option is the devil you know vs the devil you don't, they will get back in the car with the one she knows, much like this girl did.
I acknowledge people may not agree with the above, not only in this case, but in any case. Just putting out the information I've heard/experienced first hand and learned about with regards to power dynamics in relationships, including mentally/physically abusive ones. They are complex situations where rarely does logic apply, and often have a very strong mental component which has been built up over time, mostly revolving around feelings of powerlessness.
This is essentially what the government tried to argue in their prosecution against P Diddy to counter all the evidence the women willfully chose to stay and participate in his sexual encounters. In the end despite bringing in expert witness testimony to back up the kind of stuff you are saying in your post the jury still found their crediblity lacking, which is why he walked on two major charges.
But to me that's all beside the point because she actually addressed why she waited the 5 days in the police report and she said nothing about being scared or not able to escape. Just said she was going to sit on it as to not ruin his career but eventually after discussing it with friends and family she decided to go forward with it which just so happened to be the last day or two of an almost week long trip. To RC94's point that does strain credibility to me.
I will just add I'm assuming she was still in Ft Lauderdale when she called the police. But if it turned out she went home, family and friends saw the bruises, convinced her to contact the police. That's a different scenario that does make sense. But just hanging out with a guy for 4-5 days, waking up early on the last day or two of the trip deciding now's the time to report him does not make sense to me.