Just got off plane with DD (17). We were a bit late arriving, and large man opposite pushed into the aisle, put on backpack and pushed DD, who was standing, right back against her seat, backpack in her face.
I saw DD pinned to her seat and told her to ask the man to move. She wouldn't, so I tapped him on the arm, and politely pointed out what he was doing. He apologised and moved.
DD furious with me. I had overstepped, in her view. In mine, she was being a wet blanket & should have been more assertive.
So WIBU to step forward and intervene? Back story is that DD is a real people pleaser and I do find it frustrating.