hello, newbie here, just realized this place existed, so yeah
As for my opinions on Lucia; yes, just yes. Lucia is precious angel baby and must be protected.
In all seriousness though, I adored her. Something about her personality drew me to enjoy her, shes quiet, yet serious, but also self sacrificing and strong. She loves her mother, Maiter, clearly based on what little we see them interacting together. And upon finding out she was a creation of Arius, she wanted to be killed, if only out of not wanting to go insane and begin killing innocent people, as Aruis claimed she would as a result of the portal to hell being opened.
I also love that despite being adopted, Matier still showed Lucia nothing but pure maternal love for her. Their relationship with one another taught me, at a very young age, that a blood connection isn't needed for family members to love one another. This was a lesson I needed to learn, as later on in my life my family adopted my baby brother. Because of Lucia and Matier I was able to love my baby brother as much as any other member of my family, despite not having a blood relation, and for that I can't be thankful enough to that of Lucia, her story with Matier, and DMC2 over all.