Is Enchantress really gone?

In the grand finale, after Enchantress beats the hell out of the Suicide Squad, the heroes get the upper hand and defeat the villain. In the end, she tells Rick Flag that June Moone is gone for good and that he doesn't have the balls to kill her. In this way, she has a chance to stay alive, being the only connection left between Flag and his lover.

But Flag crushes her heart and Enchantress perishes, revealing that June Moone wasn't actually a goner. In the same way, can it be said that Enchantress is also alive? In the credits scene, we see Amanda Waller handing Bruce Wayne a file that contains everything about the witch.

The movie doesn't explicitly say that the villain of Suicide Squad is dead. But maybe she should remain so. If her weakness wasn't her heart, why was it played that way throughout the entire flick?

Furthermore, having her live also opens the possibility of Incubus having survived. Which, in a way, makes Suicide Squad's mission a total failure. And that is not the case, as seen in the end, when the remaining team members are rewarded for their efforts.