Maria couldn't just rest there while Clark fell asleep. She had to get stronger too, she hated the fact that she was clearly the weaker one between them. If she didn't find a way to keep up then she would just be a burden. She had to help Clark and bring down the abusive family she had been born from.
This resolve was felt by Lit as well. Their bond had become stronger after Lit had thrown herself at Maria's older brother to keep Maria safe while injured. It was a commitment that proved they were more than just tamer and spirit beast. Their souls were nearly completely bound together.
"Lit, absorb as much spiritual energy as you possibly can from this area. I want you to have all of it ready when you absorb the vial of dragon's breath." The reaction from Lit was simple. She curled her tentacles before floating off towards the longest spiritual energy within the Nova academy cemetery. While this happened, Maria began to train.