Though in a traditionally submissive position, Isabella proves to be anything but, pressing her brother against the wall and deep-throating his cock mercilessly, caressing and squeezing his balls roughly, though always with care not to harm him. Occasionally he sees light from her palms, and feels waves of magic induced sensitivity that makes her ministrations simply mind blowing in their intensity.
Looking downwards, he gets a good look at her cleavage in the tight dress, the sorceress as busty as all the women in her family, and possibly slightly more so due to magic.