Hopefully you have a male Cynotilapia afra "Cobue" in with her, and not something that could have cross-bred by accident?
For the first time ever I have hybrids. And its happened twice with different fish. Scarry thing is the second time the only female in the tank was a Ps Soulosi but the fry look like a peacock or hap. Who the heck was momma?
In my many years of keeping cichlids ,if there are males and females of the same species present they
usually will not cross breed.
But if there are only a smattering of certain females, almost any male will go ofter her...kinda like if you were stuck on a desert island and the only women were three eyed pygmies with sea shells for ears....eventually you'd be like "Hey baby, How you doin?"

However there are times where it hasn't mattered in my experience.
I once had a 180g show tank with a very diverse selection of Malawi cichlids.
There was a group of male and female Electric Yellows but the males never were allowed to breed with the females because I had a rare Labeo. fuelleborni male that INSISTED on breeding with the female Yellows. It would totally ignore the many female fuelleborni that were in the tank. I of course fed off the hybrid fry/eggs to some of my predators.
This male L. fuelleborni looked a lot like an Electric Yellow...it had black fins, yellowish body, and a purple head and facial mask.
I actually thought it was a hybrid at the time, but after talking to several experts at cichlid conventions (i.e. Ad Konings, etc.) I was told there is a form of fuelleborni like this in the lake.