I don't want my games to be 18+, so I don't plan to make a game with fully visible nude sprites. I have made sprites of characters taking showers/baths, but they're always censored with bubbles.
The addition of her big chest was because I wanted her to stand out from standard/traditional indie horror protagonists, and I also want to show that just because a character has a big chest, it doesn't mean that they belong in a 18+ game; they can still be protagonists in other types of games. Big chested characters, be it male or female, deserve representation in non adult games.
When people complain about characters such as Lucy just because of their bust size, that motivates me to make more characters like her.
I also think it's interesting to see how people react to her design, considering she's not a standard indie horror protagonist in terms of body proportions