You could always get one with a flash and take the flash off. You never know if she might need one later on, and you don't have to crank her mouth shut with it even if you did use it. I think that is where flash bands get their bad rap.
I never wanted to use a flash on Riz but I might have to now because she's starting to put her tongue over the bit. Could be a bit issue, too, though.
But even if you didn't want the flash tab on the bridle, it can be removed by a good leather repair shop. You might open up some options that way.