How is that question relevant to my opinion of the OP?
I read all 7 pages of the thread. And that's why I feel so sad about the state of our society.
If the OP really NEEDED that seat, for health reasons or otherwise, she could have simply smiled and said "I'm very sorry, but I need to stay in this seat. I wish I could help, but I cannot. Maybe the person in the seat next to the one you are assigned will be willing to sit in this row so your son can sit with you." And then, she could have gone about her day. And not have to come on a discussion board to RANT about the horrible mother who had the GALL to "demand" that she move. I 100% think the woman asked her, did not demand anything. I sincerely doubt she said "you WILL switch seats with me and that is the end of it...chop chop!!!"