It happens, it's quite a common situation actually.
She is heart broken, the kids are upset, but all this wil be swept away by the waves of time.
Pain, anguish and hand wringing are a normal response to such events and they just need to be ridden out.......they will go.
Kids? they are more resilient than you give them credit for.
You only decision is whether to leave him or not and that I'm afraid AB cannot answer.
I know Boris has let a lot of people down particularly yourself but let's face it - in the face of what he has come through (I'm not lover of his btw) - could anybody done any better - after all - it wasn't all his decision - he depended on the advice of politicians, scientists - it wasn't all his fault.
Don't get me wrong - I thank God - throughout the annus horribilis (2021) (sp) for all of us - I didn't come through what some many people came through - burying their loved ones without saying "Goodbye".