Eh - nah, I wouldn't take that bet. Desmond would be the fatherly equivalent of Antonio, since he canonically emotionally abused Zephiel all his life and finished up with a murder attempt. And considering how some kings have treated children they hated (poor Fritz), she'd be able to plausibly add physical abuse to the canonical emotional abuse.

Nah, she'd have poor woobie Zephiel snap and kill the monster who made his life hell, as canon, but then have his ensuing disillusionment and omnicidal tendencies be solely fueled by Jahn, who ~took advantage of his emotional vulnerability~. And only mean ol' Lilina wouldn't understand that it ~wasn't Zephiel's fault~.

...It's frightening how easy her formula is to generalize, isn't it?