If the reality is as you have mentioned, you will be pardoned to have looked at her with the purpose of proposing to marry her. However,
you may not look at her after having known her descriptions and appearance. Moreover, you may not stay alone with her for fear of evil consequences. Furthermore, bear in mind that she will remain a non-Mahram (not lawful to look at, touch, etc.) to you until marriage is contracted. We ask Allah to guide you to that which is proper for you regarding religion and life. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.