>>31060212She does and she doesn't. I like this art because it underlines the differences. Eyes especially differentiate them. I think management might have asked the artist to keep Rosemi in mind while designing Maria but more along the lines of making a "sister" for her since she would be in a similar niche. Tarime-tsurime twin duos are pretty common in anime, think Rem-Ram, Momo-Nana, Kagami-Tsukasa, Ryou-Kyou.