I do not believe its mature because its hard to tell what is going on with Noodle. This could be educational and inspirational picture to look at!
I know Noodle never had double mastectomy. I just wanted to draw Noodle as non-binary and as someone who had top surgery. I like the idea of Noodle being an androgynous cartoon character. I picture in this universe I created, Noodle felt pain about her body being curvy. Noodle dreams of having body masculinaization liposuction along with her top surgery. Noodle is an adult in this picture (between 25-30 or phase 4-6?).