"Long hair is such a big part of being a woman in our society. And being pretty, beautiful etc... And then there are the religious connotations of having beautiful, cared for hair. (be it braids in the NT, religious rules about covering a woman's hair, Samson etc....)
And they didn't just cut of her hair, they gave her a (in our culture) extremely masculine haircut."
I recently cut off all my hair to an extremely edgy masculine look. One of the amazing things about it has been realising how much my rather mumsy long hair (which only ever looked great a day after a blow dry) was a concession to the male gaze - and how much I feared the random disapproval of strangers. Getting rid of it feels utterly defiant and empowering, and I LOVE IT.
But the point is, I made that choice about what to do with my own look, for myself. This young girl didn't. She's stuck in the middle of two warring parents who are, by the sounds of things, making strident comments about what she should or shouldn't look like. It's dysfunctional in the extreme. Her parents should be teaching her that it doesn't matter if she has long, girlish hair or short masculine hair, she's beautiful either way. Instead, her beauty is being used as a kickball between them, with two impossibly different sets of standards. She should be allowed some autonomy and some decisions of her own. God knows, it's hard enough being a teenager without this burden as well!