I don't think he should have at all taken Mortus' word that she was a friend to the party.
She didn’t even tell you she was a friend to the party.
Commandant now says “I never said I knew Max or Heinrich.”
Despite posting (after Julian arrived) “Well I said I knew Max and Heinrich” even though in the first place she never did (if she had it could have avoided the confrontation).
But, hey, classic #mortuslogic at work, isn’t it?
I do fint it very interesting how commandant can construct alternate realities for mortus where she doesn’t do something, says she did it, and then HE denies she ever did it. Hilarious.