How is the fire portrayed in the last stanza of the spanish dancer?

In the last stanza of The Spanish Dancer, the fire is portrayed as something enduring.

We learn that the fire is wrapped around the dancer's body, but that she tries to take it and fling it out. The poet then tells us that the fire lies on the floor, but that it refuses to die. The flames are still blazing up. The fire does not die until the dancer stamps it out with her feet. All of these details support the idea that the fire is something enduring.

a. unlikely

for improbable?