Except this “contract” was negotiated by & between two union entities. Making your comparison invalid.
Not so much invalid when put in context - you seem to assume she decided to become a teacher specifically for the union support. Many union members are just working schmucks who wanted a job and had little or nothing to do with what deals the union management made. Who do you know, that when told that someone was "fighting for their benefit" would tell them to just stay out of it and leave me with lower wages and benefits? I get ragged all the time because I'm a retired AF DOD employee and that means I'm a drag on the country - some of us have solid work ethics and provide a service just as cheaply or cheaper than most contractors could (since the hourly rate that contractors get is much higher than the actual wage due to them being the "provider of benefits") and the money comes out of the same tax pot - lumping us altogether is naive and simplistic. Unions need to go, but it's not the fault of all the workers that they have busted so many banks. I will concede that those who decide to organize and protest, like the Chicago teachers, are a big part of the problem because they don't care if it busts the bank - they'd rather be put on welfare than save their jobs by allowing common sense into the mix - the only time most of them even care about the unions is when the unions tell them that the other guy is screwing them.