Not sure if you have been for a B interview, I did in a previous life. Now that is a bit of a story.
Anyway from my personal observations and everything I have seen since that conforms them the interviews are short, 2 or 3 questions, not a place for nuance even if you get a longer interview so I guess what I am trying to say is that you do not get any more opportunity to describe the situation than in the first posts here.
They of course do not have past posts to go through but they do have a lot of other system that check for things.
Anyway none of this matters unless she can pick up a cancellation. Not sure what the odds are but assume low.
In your other thread I said her Mothers actions would not impact her immigration situation, certainly can impact another immediate family member when it comes to visiting.