Yup seen the same I'd like to know why she chose to take the day off without clarifying especially after the BBC statement. I suspect its her way of protesting the decision by drawing people to write to the BBC about it to show support for her. If it did it appeared to work.
Her two tweets on the matter, she also doesn't usually keep her opinions quiet and the fact she let it run out of control suggests
https://twitter.com/maitlis/status/1265817733578579968
https://twitter.com/maitlis/status/1265894540386242560
The only frustrating thing is its made her the story instead of Cummings