“chuck her resume in the round file”
Why? What don’t you like about her? What did she do wrong? She’s got a legitimate beef. You often don’t get the raise to bring you up to market until you threaten to quit. Then the managers are suddenly “Oh, we can pay you more. Please don’t go.”
When she saw the LinkedIn Job offer, she should have discretely spoken to the hiring officer to find out if she could apply for the permanent position. If not, she should have asked her temporary agency to transfer her to another company and then immediately applied for the posted job she found in LinkedIn with the past experience of having done the job added to her résumé.
Going off half cocked is not the way to succeed.
For full disclosure, in my 35 years of employment after I separated out of the USAF, I never once asked for a raise. The only time I was not given a raise when I deserved it, I quit and was working with the competition the next week. At Verizon (legacy MCI) I moved around from position to position, and often was asked to make the move to setup new offices or departments. I was never laid-off in my 31 years at Verizon Business when many of my peers were. I, many times, topped out at my paygrade every time the salary range had been raised and was promoted into newly created senior paygrade.
Employment is not an adversarial dynamic or should not be. Capitalism is a mutually beneficial arrangement. A corporation needs some to work, you need the work and both parties come to an agreement.
She had no beef, only narrowminded misplaced jealousy.