I'm sure Boris knows he will need to obey the law. Unfortunately, he also knows he will need to be underhand and devious about it, because of the type of people he is dealing with.
This woman has to look at herself in the mirror every day.
Guilt will gnaw at her, her dreams will relive the accident. Self punishment, but no waived immunity.
But Assange didn't commit a crime here or in the US, whereas the unfortunate accident was caused by lack of attention, and should be tried in the country it occurred. I'm not without awareness that anyone can make an error and not instinctively change driving habits when roaming, but the incident still resulted in an innocent person's death.