In those 5 years, Lucien was out of communication. She more likely kept a very low profile by not knowing what was happening outside. Her little mistakes would give her away and she was careful about it.
This also means she did not even know that Aleksander was now crowned as the emperor of the Winterland empire.
When his father saw how his son was turning into a responsible and disciplined son, he finally passed the throne to him.
Lucien felt awkward at this point. "My apologies..." She slightly bowed. "I congratulate you for your succession, Your Majesty."
Aleksander only laughs in return. "It is alright, Lady Lucien."
"Oh my, I just remember something..." Wilma spoke interrupting them. She looks at Rosetta with a not-so-surprised look. "Come with me. I need your assistance."
Even before Rosetta could complain, she was pulled away. There were no other maids and was left with only them.