There was no struggle on the balcony because she was gagged and her hands and feet were tied.
She would still be able to move her feet even though they were loosely bound at the ankles and there was no signs that someone else was on the balcony with her.
IMO
Someone would also have had to leave rope marks on the balcony, if someone had hopped there with rope around her ankles and rope trailing behind her, coming from her hands.
The thing that bothers me the most is her hair. It seems the noose and the t shirt were wrapped around the outside of her hair - is that so?
Yes, that is true but why would her hair be on the outside of the noose and shirt? Wouldn't it get in her eyes and possibly block her vision if it was hanging down loose?
IMO
Well she apparently didn't worry that a long rope hanging from her hands is going to get caught on something or trip her? But she was worried about her hair so she just pot a noose on the outside of it (which an instinct would presumably prevent in most people, suicidal or not).