Farah doesn't dislike the Shadow Immortal. He wasn't using his powers to hurt ordinary humans, and he was able to coexist with them perfectly with the help of the magic craftsmen on his side.
The Shadow Immortal also had connections to various organizations, but it wasn't to expand his territory or control over a large number of people. As a matter of fact, his connections outside the castle were very limited as they only wanted to expand their sources of materials.
The most important thing was that he wasn't gathering people in order to have them worship him and establish faith.
'It's odd… He had several Immortals serving him and should be aware of it. He should be thinking of ascending to become a Paragon, but he wasn't doing it… It's too suspicious.' Farah thought for a moment.