My suggestion is to ask to speak to your boss, privately and tell her your concerns. Own it, without placing blame on anyone - e.g. I feel (stressed out, frustrated) when X happens, or Y and I'm not able to reach my full potential because of this.
Stating that you're unhappy without good cause, makes it look like the problem is with you, rather than your environment. Try not to prejudge or pre-empt her response in any way. Stay open. For all you know, she may be aware of rumblings from within, but not been able to effect change, yet. Or she may question if you are better off in another area of the business.
In other words, avoid coming across as a victim.