You need Leneth to be pregnant, and then use the teleport orb to check the secret bedroom until you find Hellhound in a maid uniform. There is a randomized chance for her to appear in that outfit, which is re-rolled when you use the teleport orb.
Are Vampire's events inside the volcano in Amagal finished? The scene of Hellhound in the maid uniform and the events of Vampire are the only requirements for Hellhound to appear in the top right inside of the volcano.
Are you sure you're looking in the right place? Because it sounds as if you have all requirements.
Else, can you send me the save file from the www/save folder with the number of the save slot in which you have the issue to Naughty-Netherpunch@web.de please.
