Actually head over heels for Tomoya, has liked him a long time. Quite open minded and much devout to him in the ending of her arc. Sacrifices her own happiness to be the older doting sister for Ryou so she could have happiness with Tomoya. (Ryou knew all along, the bitch)
Despite it all falling apart, Tomoya realising his true feeling, Ryou realising (already knows but realising the mistake) that they liked each other and Kyou admitting it, would not give up on that resolve for her sister.
It made for a painfully dragged out story really. I didn't weep tears cause of how dragged it was.
A bit hypocritical
As the anime puts accross, a female version of Tomoya really.