^^^:yes: ^^^
Chicks do the radical haircut thing when they are unhappy with what they see in the mirror. "I need a change..."
This chick is chunky, isn't she?
Generally, I see women who feel they are fat getting their "fatty haircut" instead of losing the weight. Somehow, they feel like "if they distract you from their body" by calling your attention to their hair, then, people won't perceive their fatness.
Well, I hate to break it to women: cutting off your pound of hair does not equal cutting off 20 lbs of muffin-top.
"Oooh... your new haircut makes your neck look skinnier!"
If she's not overweight, then, something else in her life has her ego deflated and her insecurity is flaring. Perhaps her job is more stressful, you've shaken her game, or she's unhappy with the color of her car. Don't bother trying to figure it out, you've already figured out all that you need to: you don't dig it.
With this chick, I would punt. She clearly isn't what you have in mind, and you haven't invested much time yet. That "bait and switch" so early in the interaction stinks like it will probably be a standard routine with her. Next, she'll stop wearing dresses and start wearing sweat pants out on your dates, swearing, drinking too much, and throwing sh¡t at you during arguments that she starts up out of nowhere. Don't wait around to see what kind of stupid stunt will be next, replace the plate: this one is broken.
It's getting tough to find emotionally stable women anymore: try anyway.