Princess Anne would have been a good choice to accompany her mother. Anne is popular because it seems, what you see, is what you get. She is also rather like her father.
The Queen rarely puts a foot wrong but, choosing to walk in to the service with Andrew was an unnecessary mistake. If Andrew had any regard for his mother, his children and wider family, he’d have said thanks mum for thinking of me but, in view of the ‘recent publicity’ I don’t believe it would be to your advantage. I’ll come and sit at the back, why don’t you get Anne to walk with you