>>514057755
Possibly something like Munchausen-by-proxy (where caretakers get off on someone in their care being sick, disabled, injured somehow etc., even going so far as to exaggerate or create the injuries, or mental health diagnosis).
A sort of toxic βempathyβ, wanting to show oneself as the diverse, liberal, cool and good person, helping the trans kid as much they can. A combination of feeling like the powerful, helpful one in the relationship + maternal nurturing instinct, warped into a deranged form.