i agree with you ! i initially thought she was butch because of how she paralleled utena to me (and her outfit). the manga (which IS a different universe, i know) does tell us that the reason juri decided to present the way she did was because shiori expressed an interest in princes and she wanted to impress her/get her attention.
also off topic, but i just love how she randomly just wears a shawl with her nightgown.