> "PS: I left that job a few months later — one of the best decisions I've ever made!"
I would bet my first born and my entire life savings that she didn't leave voluntarily.
A good portion of my previous job was doing salary negotiations and personnel management. What I would bet the farm on, and would do so without hesitation, is that they gave her the raise, then immediately began looking for her replacement. Once they found a suitable candidate, they either canned her or found reasons to ding her on performance reviews, being late, etc, which would be justification to fire her with cause. I know because it's pretty much the operating manual for anyone who was in my position. Why pay someone double when you can find another sucker to work for half the pay? Even if it was 3/4 pay, it's still a savings and when we're talking tens of thousands of dollars, it's enough.
She was fired from her job and/or shown the door after asking for (and getting) her raise. I guarantee it.