Luke makes a great point. BPs tend to go when they're ready, not just when we tell them to.
And to others, if you look up the definition of cull, it's not just killing an animal. It is also meant as removing animals from breeding.
If it were me, though, with a normal not producing for me 2 years in a row, I'd send her packing, as I have limited space. I'd rather a morph take her place in my small rack. But that's just me...