I don't think it's a case of it being ok to come up since it's ok for NS to travel. I think neither are essential journeys so they both shouldn't be doing them. Boris's is I guess a one of but a bigger trip, NS is almost daily travelling from a higher infected area to a lower one whilst telling everyone to stay at home. So, they are both in the wrong.
As far as treason is concerned, I think that there is a bigger elephant in the room.
If the stories that she deliberately tried to get AS sent down for something he didn't do are true, and if that is proven, she could be facing jail time. If you remove the titles etc and imagine that someone colluded with friends and workmates to get their former boss done for rape that you know they are innocent of, do you think that's not a crime?
Interesting times ahead even if you are neutral.
The Kenny McAskill thing is smoke and mirrors to discredit him since he seems to be on Salmond's side imo. It's quite safe for her to criticise him as he is an MP just like Margaret Ferrier so she has no direct power to discipline him so can get away with being angry and making sure it's in the papers.