She's looking great, Crook! I love how much patterning she has along with those pinks. An exemplary and enviable BCO for sure!
I really feel you on the "exercise some restraint and keep numbers in check" front. I ended up having to turn down (spoiler alert!) the beautiful monster of a Honduran milk snake I was offered as a rehome recently, as I just couldn't swing the 6' cage they deserved on top of Kuzco and Pandora's imminent caging upgrades. A North Brazil BC (almost certainly) won't be happening for similar reasons. Being responsible can suck, but it's for the best. The snakes certainly seem happier (or at least snake-happier) for it. I'm sure you'll do right by your own crew in the end.
If you'd seriously like to breed her but don't want to get another snake, perhaps you could look into a breeding loan when the time is right?