Did Imra Make the Right Decision with Pestilence on 'Supergirl'?

With the third Worldkiller finally active, and the Legion's mission to come back to Supergirl's time and stop her before she turns into Blight revealed, Supergirl showed a clash in ideology between Imra (Saturn Girl) and Kara. As they attempted to unveil the identity of Pestilence in Supergirl season 3 episode 16, Imra's vision of killing the Worldkiller before she left a permanent mark on the world put her at odds with Kara, who just wants to help save those that are stuck within, i.e. Julia.