Lilia was there to look over her master, especially after she allowed the mountain goat to go after him. She knew she would save him if he fails to deal with the situation.
Her master was growing significantly, even though he didn't admit it; that's why the degree of exercise was rising accordingly. This specific training was something she herself had thought of, based on her master's current situation.
His ether was growing. Unlike any other awakened, her lord was increasing his ether very swiftly passing each moment, and he hadn't realized that. However, Lilia could sense it.
His practice never stops even in sleep. He is a restless being with ambition. She didn't know what it was and how this sudden development occurred, however, rather than being an arrogant master, Lilia prefered this hard working one more.