Question

where did Virginia see the Canterville ghost? what did she notice?

Answer 1

Virginia was searching for the maid in the house as she torn her gown while moving ahead towards garden. In the process of searching she found one of the door of the room ajar in which she thought that the maid might be sitting as she used to go there to do her work, but when she reached, she saw the ghost.
Yes her meeting was different from other family members as she was the only one who interacted with him in depth. Others were either afraid of him or they made him afraid.

Answer 2

She listens to him, learns an important lesson, as well as the true meaning behind meaning behind the riddle.She agrees to weep for him as he has no tears, prays as he has no faith and accompanies him to the angel of death and begs for mercy for him. She risks her life, goes bravely through the wainscotting and goes with him to the garden of Death.