The next ten years of Mona's life would be a macabre display of unrelenting depravity, having murdered at least a hundred people in the following decade, subjecting them to some of the worst pain and torture imaginable before immortalizing the beauty of their pain either in the form of her infamous paintings, their bodies turned into works of art themselves, or sometimes both.
How Mona managed to avoid capture by police in this span of time despite how prolific her murders would become can be contributed to a multitude of factors, such as how wildly her methods of killing varied (making it difficult to place a motive), how indiscriminate she was in choosing her victims, willing to go after anyone whether they be men, women, the young, the old, the disabled, literal infants etc., how often she moved around, causing investigators to believe a lot of her murders were unrelated and generally how elusive and nimble she was.
It was only when a collection of some of her paintings were discovered in a storage unit that she purchased under an alias where these murders would finally be traced to her and even then, this is exactly what she wanted. Mona always planned for her paintings to be discovered when the time was right, every artist wants to be recognized for their work after all, and now that she has perfected her craft, she was ready to show the world the extent of her artistic genius and the beauty they bring into a hideously bleak and pointless world.
Mona, or "The Painter" as the media began to call her was beginning to make a name for herself and she would only become more infamous as her murders started to become more brutal and frequent and as more of her paintings were beginning to be discovered. Mona felt great pride for all the attention she was getting, the desires of being appreciated she had as a child we're finally vindicated, albeit in a much more dark and twisted sort of way.
It was throughout this time that Mona's sexuality started to spiral out of control as well, having begun her career as a serial killer during her pubescent years, she quickly started to sexualize her murders and experimented with everything from sadomasochism to necrophilia, literally fetishizing the pain and death she subjected her victims to and those who'd die relatively quickly were the lucky ones, the depths of her twisted creativity being the stuff some would believe only the Devil could conjure up.
To say Mona was beginning to "mix business and pleasure" was an understatement.
Mona would also become a seasoned cannibal at this point as well, gaining a taste for human flesh and blood the moment she first tasted it when she had nothing else to eat, having a distinct preference for raw meat as well (the heart and brain being her favorites) and it would be human meat that would become her main source of nourishment for years to come, with the occasional rat or cockroach here and there.
Mona lives a very transient lifestyle that requires her to move frequently in order to avoid capture but she has chosen multiple locations in where she would alternate between and even live in for extended periods of time when the time called for it, such as to rest and focus on her paintings. Mona chose to squat in places that have been long abandoned and rotting from the inside out, typically far removed from human contact as well, such as in the case of the lighthouse and the paint factory.
This is both out of necessity to avoid unwanted human contact/police potentially catching up to her as well as the fact that she found an odd sense of comfort in these places despite growing up in a literal mansion, preferring to sleep in an open grave and spoon a rotting corpse than in a warm bed. Just another testament to her detachment from humanity.
Although harboring a deep hatred for humanity for the majority of her life, there would come a day where Mona would meet a man that would change her life forever, the only human being that she would actually feel something other than complete revulsion towards, a man that would make her life brand new in the most vile way possible.
That man's name is Bill Collins.