While Aster caressed Lilia's hair, he proceeded to tell her how things resulted inside the secret realm, including how he met other people with similar backgrounds as Mylene and Eris… and how he fought them, he focused on that and left Espi and Esmeralda for the last.
Unfortunately he had to keep the name "Divine Firmament" a secret from his mother, because the laws and regulations weren't as lax in the Dragon Legacy Heavenly Quadrant, if not Mylene or Eris would have told him about it already.
But still he could suggest and give hints to Lilia about it, Lilia seriously listened to Aster's story, showing different reactions through it, she was happy that her son had made an advance in how he uses the paragon body, and also she noticed it won't be long before he breaks through.
And she was convinced that venturing, fighting and experiencing was the best for her son to become stronger.