They seem to be angry because they cannot be priests. Nor do they wish to be noticed in public for fear of offending someone. Mother Teresa wore a sari, making her well recognized and respected as a bride of Christ.
Wow, what a mean looking bunch of women! I use the term women and no sisters. Something I have noticed in these bunch of non-habited so called women religious. Contrast them with the younger habited nuns like the Nashville and Ann Arbor Dominicans, Sisters for Life, Mother Theresa's Sisters and The Carmelites in Los Angels to mention a few!