I would surmise that even though this "pair" have spawned, they have not bonded. I had a pair that behaved similarly. I introduced a female in the 115g 5-foot tank holding the male (and 150 characins and cories) and they behaved very similarly to what you describe. At the time I was not experienced with this species to recognize what this meant. They spawned four times (the copries are very adept at finding and eating the eggs during darkness when the cichlids are "resting") with the female looking after the clutch of eggs sometimes and the male once. The male finally had enough I guess, and he hounded the female and she died one night.
Depending upon the other fish in this tank, the eggs may survive and hatch. If you have dried leaves, add them; they slowly decompose, producing copious levels of infusoria, a first food for all fish fry. Oak, maple, beech leaves are fine, most any hardwood tree leaves that have completely died (as when they fall off in autumn), or you can buy almond leaves in some fish stores. When I see the fry shoal, I grind up some flake food, mix it with a small amount of tank water to thoroughly soak it so it sinks, and then using a baster-sort of thing gently squirt some of this into the shoal. The fry will grab the bits. You can also hatch brine shrimp.
