ACF too old to breed?

[Tongue Flicker]

Recently given 3 african clawed frogs (1 female, 2 males). They were in a very small, unfiltered, unheated and I was told they haven't spawned in years. They're about 13, now living in a 30 gallon tank 7ish inches full with decor and filter, is the female no longer spawning because she is too old?

Females will spawn until they die. How big are your females? Snout to vent