Viviana observed Lionel's eyes while she contemplated. The majority of humans on earth want to leave their legacy in the world. Most do that by having kids and raising them to follow their values and leaving them an inheritance.
Then there are people like her who cannot have children who can carry their legacy. Does that mean that she is not worth remembering?
She was born Melanie Filia Dei. She doesn't know who her parents are or if they are alive. But she knows this.
Melanie Filia Dei is dead, Viviana Mattias is dead, and she didn't know how long Minerva Russo will be alive. She didn't have much hope. She felt that this was going to be her last day on earth, for real.
Shouldn't someone know her story? Shouldn't there be at least one more person who remembers Leo after she dies?
She thought that Lionel would be the perfect person to listen to her story. Whether he makes a character out of her or of Leo, she would consider it a success.