Cold alone would not stop a plane/train/helicopter. I think a more acurate title would be Camilla chooses not to go to Birkhall because of the cold, rather than they were 'kept apart'. Certainly she could easily have gone to join him, had she been inclined to.
'Cold alone' wouldn't but at the moment Britain is snowed under. Schools are closed, people can't get to work, flights are being cancelled, trains are being cancelled and the entire country is at standstill due to the extreme weather conditions.n Taking a helicopter up in these conditions would also be extremely dangerous.
Camilla has also recently become the grandmother of twins and is probably having a great time spending time with these two new additions to her family.
If I was in Britian at the moment I most certainly wouldn't be making any attempts to travel anywhere due to safety concerns, for myself and for others who might have to be travelling despite the conditions.
Spend a bit of time reading the articles from this link
BBC NEWS | Special Reports | Frozen Britain
It is the longest cold snap in over 30 years and Britian is struggling to cope.
Another article:
Express.co.uk - Home of the Daily and Sunday Express | UK News :: Big freeze continues as 8ins is on its way-
This one even reports 23 deaths due to the cold. This isn't a normal winter in Britian but extremely cold for Britain. Some countries experience this every year and thus are prepared for it but Britain doesn't and therefore is finding it difficult to cope. This extreme cold is also hitting other parts of Europe that don't normally get this cold for this long.
And another:
Windchill Saturday: Icy blast makes Britain feel even colder as snow decimates sport and councils are told to ration their grit | Mail Online
This one has details of the cancellations of flights and trains as well as pictures of cars stuck in the snow.
Not going to Scotland is a prudent move as it means that Camilla is aware of the dangers involved and doesn't wish to put an added strain on services at the moment to get her to her husband at this time - assuming that there ever was an intention for her to go to Scotland rather than spend this time with her new grandchildren and her daughter.
She has her own family as well as the royal family and does spend time with them, as any mother should do.
I can just see the headlines if she insisted on going: 'Camilla puts staff at risk to reach Charles' and wouldn't you have a field day then claiming that she was inconsiderate and selfish. There are some people who only wish to find fault with Camilla no matter what she does.
Camilla is doing the right thing - for her, for Charles (imagine his distress if something happened to her trying to reach him) and for those people who have to accompany her wherever she goes - she is staying put.