If the insufferable old cow didn’t have a first class seat booked then she’s not entitled to one no matter how much she bellows and stomps. Simple as that. Miz Jackson-Lee needs to develop a future orientation to anticipate her needs, but seems incapable of doing so.
IIRC, Sheila tried to bull her way into first class on a Delta flight. The flight attendant told her to return to her seat & she launched, screaming “I am a queen and I expect to be treated like a queen!!!” The stewardess stood her ground & Sheila vowed revenge.
She contacted the president of Delta Air Lines and....guess what? He publicly told Queen Sheila she was welcome to take her business elsewhere. There were no riots; she is not omnipotent.