I can't remember the name of this or exact plot but here is what I do remember... A female character ends up cross dressing/taking the role of a male, this also seemed to be set in the early 1900s, or at least it was not set in the present. I don't think the cross dressing was her preference either, seemed more like she was forced into it by circumstance. Also felt like it was set at a boarding school too, or at least part of it was. Also think is was a manhwa too, the art was really nice and reminds me of stuff like nocturne/sad love story/dear diary (but I could be remembering wrong?). It is not the standard type of cross dressing story, it was more somber, tragic and dramatic from what I can recall.

If anyone has any ideas I would love some help!

maybe Savage Garden ?

Yes!!! That was it, thanks