Diana can generate inspirational flames, like most teenagers.

The rest of the arc can be read on FE's website: http://furryexperience.smackjeeves.com/comics/2136348/page-422/
Even more comics and art can be found on FE's Patreon: https://www.patreon.com/EllenNatalie
ALSO, the first FE Graphic Novel is available to purchase: https://www.rabbitvalley.com/item/9370/1334/Ice-Queen-by-Ellen-Natalie