Not on BA but AA but she had BA tags on her carryon:

A few weeks ago I landed at DFW at 2am after a miserable diversion to a town in the middle of nowhere. Upon finally making it to DFW, everyone on the plane was directed to a customer service center for rebooking. The only priority service available was for those of us in wheelchairs. One lady, not in a wheelchair, kept trying to cut in front of me "but I'm elite flying business." The first time she tried it, the guy pushing my wheelchair sent her away. The 2nd time my travel partner did. The third time it was the agent who sent her to the very end of the line that had doubled while she kept attempting to cut in front of me. I saw some smirks from a few people in the main line when she got sent to the back of the line.