Yes, they do need to be conditioned. I would turn the temp up a little bit (80-82F) And keep the water clean. You also help your chances if you add a few spawning sites to the tank. Feed them 3-5 times a day with a high protein food. Your female will be visably ripe/plump with eggs when she is ready. I have had good luck feeding frozen brine, earthworms and massivore pellets. With all the feedings you have to be careful with your water quality. So change it often. At least 25% bi-weekly while conditioning.
Another thing to think about is that your female might not be as fertile as she was when she was younger(if she was ever fertile).
I'm sure you could do less work and have them spawn, but this worked for me with a few pairs, and like clock work. I had a new spawn just about every 10 days from 3 pairs. About once a month, per pair if I didn't seperate them. The females need a break in between. The males will keep going.