Secret Passages of Venisana. Book Three (Taynye Khody Venisany)

'The Secret Passages of Venisana' is the third book about Venisana, the strange and terrifying world of Agatha.
Agatha's journey continues. And although she manages to reunite with her family, the girl's parents seem to have been replaced. To regain her lost happiness, Agatha sets out on her journey again. She encounters child kidnappers, learns the secret of Venisana's third floor, and finds herself at a ball among terrifying masks and their young servants. If the whole world convinces you that your parents have fallen out of love with you, is it worth believing?