Angelina Cheng wrote:

I was writing the first thread for my mom.

And yes, the attendant ( verified by the other passenger ) was rude to
my mom and push my mom off the plane, make a old lady cry without
apology, force she to put her bag in the cabinet when putting under
seat is perfectly fine?

Was she putting it under her seat or the seat in front of her.
You said earlier that it didn't matter.. IT DOES MATTER.

This was a a very unusual experience, if happened as told, and it
doesn't make sense.
There appears to have been some communcation problem..