I don't think becky refusing to give evidence is that surprising. i completely forgot about this, but I was asked many many years ago to give evidence in a court case, it was a sexual abuse case. at time i was a new mum when the police knocked on my door to let me know my name had been given and that i might be able to support the prosecution, I told them what i knew but made it clear i didnt want to give evidence in court. I regret it now, however, i was only 18 just given birth and felt terrified of standing up in court. luckily (though not really), they had enough girls willing to give evidence and they didnt need me and the man was handed five concurrent life sentences for his sex crimes against six underage girls (the sentence shows just how serious the case was). however, had my name been mentioned during the court case over and over (it wasnt), i may have been more inclined to give evidence.
also - my typing is going to be very dodgy for a little while, i broke my wrist over the weekend (my dominant one, falling over drunk at a wedding ooops!) and i am doing everything one handed sorry in advance!