I just read that in the paper. Maybe nations should look more into the issue of 'diplomatic immunity.'

I don’t have high hopes of her returning to the UK to face justice.

The whole diplomatic immunity business is, and always has been, open to abuse, it is simply a get out of jail free card for members of the political establishment. It was brought in in the days when there was an assumption that members of the political establishment could do no wrong. Indeed the justification for it, that it protects diplomats against being persecuted on political grounds, is if you think about it for even a second very questionable. Since it is obvious that the only states likely to so treat diplomats, are those who will not respect international law anyway. Would diplomatic immunity have protect US diplomats in Tehran, if they had not got out in time, or Vietnam from that matter ? No, but it protects people who cause car crashes while driving stupidly, (this is far from the only case ), and it stops people like J . Assange from having to answer rape charges. (Note 'answer' not be convicted of, his guilt or otherwise is another matter.)

I doubt much happens. This is an all too common occurrence. On a smaller scale, cities like New York and Washington are owed millions in fines. Those with immunity act like royalty from the Middle Ages. Every once in a while in a high profile case like murder, the offender's nation will cut them loose. But not always (just some years ago a Brazilian murdered and got away).