Jack thinks he's responsible for killing his mother and thus for his uncle’s conceived hatred towards him.
Here, I mean to say that Jack assumes his uncle hates him (of course, Jack is sure, but it may not be the truth). And I think it'd be incorrect to say "...and thus for his uncle's assumed hatred towards him." Is conceived also incorrect?
I tried looking for other sentences that use conceive similarly, but those sentences seem to be using conceive to say hatred was formed.
Really, my goal is to say "...and thus for his uncle's hatred towards him, though Jack only assumes his uncle hates him--his uncle truly does not." Or something along those lines. I'm trying to make this sentence more concise by using conceived this way, but am not sure if this is the right approach. Suggestions?