Umineko Tweak has released an updated patch of Rondo and the Witch of Reasoning which gives the game text boxes. Can be found here
The daughter of Rudolf and and his current wife, Kyrie, Ange is Battler Ushiromiya's younger sister. She couldn't come to Rokkenjima due to sickness. After the incident on Rokkenjima, Ange is placed under the care of her last living relative Eva Ushiromiya. She attends St. Lucia's Academy and is hated by Eva. In the world of 1998, she inherits the family headship and becomes the final Beatrice, Ange-Beatrice. She seeks to uncover the truth behind the events of Rokkenjima, even at the cost of her life.